UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

 Washington, D.C. 20549

 FORM 10-K

 (Mark One)

 x ANNUAL REPORT PURSUANT TO SECTION
13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the fiscal year ended December 31, 2023

or

 o TRANSITION
REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

 For the transition period from _____ to _____

Commission file number of the issuing entity: 333-207361-06

 Central Index Key Number of the issuing entity:
0001716602

 CSAIL 2017-CX9 Commercial Mortgage
Trust

 (exact name of the issuing entity as specified in its
charter)

 Central Index Key Number of the depositor: 0001654060

 Credit Suisse Commercial Mortgage
Securities Corp.

 (exact name of the depositor as specified in its
charter)

 Central Index Key Number of the sponsor: 0001628601

 Column Financial, Inc.

 (exact name of the sponsor as specified in its charter)

 Central Index Key Number of the sponsor: 0001542256

 Natixis Real Estate Capital LLC

 (exact name of the sponsor as specified in its charter)

 Central Index Key Number of the sponsor: 0001632269

 Benefit Street Partners CRE Finance
LLC

 (exact name of the sponsor as specified in its charter)

 New York

 (State or other jurisdiction of

 incorporation or organization of

 the issuing entity)

 38-4046683

 38-4046684

 38-7187317

 (I.R.S. Employer

 Identification Numbers)

c/o Computershare Trust Company, National Association, as agent for

 Wells Fargo Bank, National Association

 as Certificate Administrator

 9062 Old Annapolis Road

 Columbia, MD

 (Address of principal
executive offices of the issuing entity)

 21045

 (Zip Code)

 Registrant's telephone number,
including area code:

 (212) 272-6858

 Securities registered pursuant to Section 12(b) of the Act:

 Title of each class

 Trading Symbol(s)

 Name of each exchange on which registered

 None

 Securities registered pursuant to Section 12(g) of the
Act: None.

 Indicate by check mark if the registrant is a well-known
seasoned issuer, as defined in Rule 405 of the Securities Act. o Yes
No

 Indicate by check mark if the registrant is not required to
file reports pursuant to Section 13 or Section 15(d) of the Act. o Yes
No

 Indicate by check mark whether the registrant (1) has filed
all reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter period
that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days. Yes o No

 Indicate by check mark whether the registrant has submitted
electronically every Interactive Data File required to be submitted pursuant to
Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the
preceding 12 months (or for such shorter period that the registrant was
required to submit such files).

 Indicate by check mark whether the registrant is a large
accelerated filer, an accelerated filer, a non-accelerated filer, a smaller
reporting company, or an emerging growth company. See the definitions of "large
accelerated filer," "accelerated filer," "smaller reporting company," and
"emerging growth company" in Rule 12b-2 of the Exchange Act.

 Large accelerated
filer o
Accelerated filer
o

 Non-accelerated
filer

Smaller reporting
company
o

Emerging growth
company
o

 If an emerging growth company, indicate by check mark if the
registrant has elected not to use the extended transition period for complying
with any new or revised financial accounting standards provided pursuant to
Section 13(a) of the Exchange Act. o

 Indicate by check mark whether the registrant has filed a
report on and attestation to its management's assessment of the effectiveness
of its internal control over financial reporting under Section 404(b) of the
Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm
that prepared or issued its audit report. o

 If securities are registered pursuant to Section 12(b) of the
Act, indicate by check mark whether the financial statements of the registrant
included in the filing reflect the correction of an error to previously issued
financial statements. o

 Indicate by check mark whether any of those error corrections
are restatements that required a recovery analysis of incentive-based
compensation received by any of the registrant's executive officers during the
relevant recovery period pursuant to §240.10D-1(b). o

 Indicate by check mark whether the registrant is a shell
company (as defined in Rule 12b-2 of the Act). o Yes No

 State the aggregate market value of the voting and non-voting
common equity held by non-affiliates computed by reference to the price at
which the common equity was last sold, or the average bid and asked price of
such common equity, as of the last business day of the registrant's most
recently completed second fiscal quarter.

 Indicate by check mark whether the registrant has filed all
documents and reports required to be filed by Section 12, 13 or 15(d) of the
Securities Exchange Act of 1934 subsequent to the distribution of securities
under a plan confirmed by a court. o
Yes o
No

 Indicate the number of shares outstanding of each of the
registrant's classes of common stock, as of the latest practicable date.

 DOCUMENTS INCORPORATED BY REFERENCE

 List hereunder the following documents if incorporated by
reference and the Part of the Form 10-K (e.g., Part I, Part II, etc.) into
which the document is incorporated: (1) Any annual report to security holders;
(2) Any proxy or information statement; and (3) Any prospectus filed pursuant
to Rule 424(b) or (c) under the Securities Act of 1933. The listed documents
should be clearly described for identification purposes (e.g., annual report to
security holders for fiscal year ended December 24, 1980).

 EXPLANATORY NOTES

 The Park Center Phase I Mortgage Loan, the JW
Marriott Chicago Mortgage Loan, the Center 78 Mortgage Loan, the 300 Montgomery
Mortgage Loan, the Carolina Hotel Portfolio Mortgage Loan and the Apex Fort
Washington Mortgage Loan, which constituted approximately 9.3%, 4.7%, 4.2%,
4.2%, 2.3% and 2.0%, respectively, of the asset pool of the issuing entity as
of its cut-off date, are each an asset of the issuing entity and are each part
of a loan combination that includes (a) with respect to the Park Center Phase I
Mortgage Loan, one other pari passu loan, which is not an asset of the
issuing entity, (b) with respect to the JW Marriott Chicago Mortgage Loan, two
other pari passu loans and three subordinate companion loans, each of
which are not assets of the issuing entity, (c) with respect to the Center 78
Mortgage Loan, one other pari passu loan and one subordinate companion
loan, each of which are not assets of the issuing entity, (d) with respect to
the 300 Montgomery Mortgage Loan, one other pari passu loan, which is
not an asset of the issuing entity, (e) with respect to the Carolina Hotel
Portfolio Mortgage Loan, one other pari passu loan, which is not an
asset of the issuing entity and (f) with respect to the Apex Fort Washington
Mortgage Loan, two other pari passu loans, which are not assets of the
issuing entity. These loan combinations, including the Park Center Phase I
Mortgage Loan, the JW Marriott Chicago Mortgage Loan, the Center 78 Mortgage
Loan, the 300 Montgomery Mortgage Loan, the Carolina Hotel Portfolio Mortgage
Loan and the Apex Fort Washington Mortgage Loan, are being serviced and
administered pursuant to the Pooling and Servicing Agreement, which is
incorporated by reference as Exhibit 4.1 to this Annual Report on Form 10-K.
The Boulders Resort & Spa Mortgage Loan and the Acropolis Garden Mortgage
Loan, each previously an asset of the issuing entity being serviced under the
Pooling and Servicing Agreement, were not an asset of the issuing entity during
the reporting period and are omitted from this Annual Report on Form 10-K and
will be omitted from subsequent Annual Reports on Form 10-K.

 The Exhibit Index describes
exhibits provided by certain parties (in their capacities indicated on the
Exhibit Index) with respect to the 245 Park Avenue Mortgage Loan, which
constituted approximately 6.3% of the asset pool of the issuing entity as of
its cut-off date. The 245 Park Avenue Mortgage Loan is an asset of the
issuing entity and is part of a loan combination that includes the 245 Park Avenue
Mortgage Loan, twenty-one other pari passu loans and five subordinate
companion loans, which are not assets of the issuing entity. A pari passu
portion of the loan combination was securitized in the 245 Park Avenue Trust
2017-245P transaction (the " 245 Park Avenue 2017-245P Transaction ").
This loan combination, including the 245 Park Avenue Mortgage Loan, is being
serviced and administered pursuant to the trust and servicing agreement for the
245 Park Avenue 2017-245P Transaction, which is incorporated by reference as
Exhibit 4.2 to this Annual Report on Form 10-K.

 The Exhibit Index describes
exhibits provided by certain parties (in their capacities indicated on the
Exhibit Index) with respect to the 85 Broad Street Mortgage Loan, which
constituted approximately 5.2% of the asset pool of the issuing entity as of
its cut-off date. The 85 Broad Street Mortgage Loan is an asset of the
issuing entity and is part of a loan combination that includes the 85 Broad
Street Mortgage Loan, three other pari passu loans and three subordinate
companion loans, which are not assets of the issuing entity. A pari passu
portion of the loan combination was securitized in the CSAIL 2017-C8 Commercial
Mortgage Trust transaction, Commission File Number 333-207361-05 (the " CSAIL
2017-C8 Transaction "). This loan combination, including the 85 Broad Street
Mortgage Loan, is being serviced and administered pursuant to the pooling and
servicing agreement for the CSAIL 2017-C8 Transaction, which is incorporated by
reference as Exhibit 4.3 to this Annual Report on Form 10-K.

 The West Town Mall Mortgage Loan,
previously an asset of the issuing entity, was not an asset of the issuing
entity during the reporting period and is omitted from this Annual Report on
Form 10-K and will be omitted from subsequent Annual Reports on Form 10-K.

 The Two Independence Square
Mortgage Loan, previously an asset of the issuing entity, was not an asset of
the issuing entity during the reporting period and is omitted from this Annual
Report on Form 10-K and will be omitted from subsequent Annual Reports on Form
10-K.

 The IC Leased Fee Hotel Portfolio
Mortgage Loan, previously an asset of the issuing entity, was not an asset of
the issuing entity during the reporting period and is omitted from this Annual
Report on Form 10-K and will be omitted from subsequent Annual Reports on Form
10-K.

 The Exhibit Index describes
exhibits provided by certain parties (in their capacities indicated on the
Exhibit Index) with respect to the Westin Building Exchange Mortgage Loan,
which constituted approximately 7.9% of the asset pool of the issuing entity as
of its cut-off date. The Westin Building Exchange Mortgage Loan is an
asset of the issuing entity and is part of a loan combination that includes the
Westin Building Exchange Mortgage Loan and one other pari passu loan,
which is not an asset of the issuing entity. The other pari passu
portion of the loan combination was securitized in the BANK 2017-BNK7
transaction, Commission File Number 333-206677-18 (the " BANK 2017-BNK7
Transaction "). This loan combination, including the Westin Building
Exchange Mortgage Loan, is being serviced and administered pursuant to the
pooling and servicing agreement for the BANK 2017-BNK7 Transaction, which is
incorporated by reference as Exhibit 4.4 to this Annual Report on Form 10-K.

 The master servicer of a pooling
and servicing agreement or trust and servicing agreement also functions as the
primary servicer of the related mortgage loans serviced and administered
pursuant to such agreement unless a separate primary servicer is identified
herein. If this report does not identify a separate primary servicer, the
servicer compliance statement provided by the master servicer under any such
agreement also encompasses its responsibilities as primary servicer of the
related mortgage loan or mortgage loans.

 Rialto Capital Advisors, LLC is
the special servicer of the mortgage loans serviced under the Pooling and
Servicing Agreement and the Westin Building Exchange Mortgage Loan. As a
result, Rialto Capital Advisors, LLC is a "servicer" as defined in Item
1108(a)(2)(iii) of Regulation AB, in the capacities described above, because it
is servicing mortgage loans that constituted 10% or more of the assets of the
issuing entity as of its cut-off date. The assessments of compliance with
applicable servicing criteria, accountants' attestation reports and servicer
compliance statements delivered by Rialto Capital Advisors, LLC in the
capacities described above are listed in the Exhibit Index.

 Wells Fargo Bank, National Association
is the certificate administrator of the mortgage loans serviced under the
Pooling and Servicing Agreement and the primary servicer of the Westin Building
Exchange Mortgage Loan, the 245 Park Avenue Mortgage Loan and the 85 Broad
Street Mortgage Loan. As a result, Wells Fargo Bank, National Association is a
"servicer" as defined in Item 1108(a)(2)(iii) of Regulation AB, in the
capacities described above, because it is servicing mortgage loans that
constituted 10% or more of the assets of the issuing entity as of its cut-off
date. The assessments of compliance with applicable servicing criteria,
accountants' attestation reports and servicer compliance statements delivered
by Wells Fargo Bank, National Association in the capacities described above are
listed in the Exhibit Index.

 Wells Fargo Bank, National
Association is the custodian of the mortgage loans serviced under the Pooling and
Servicing Agreement, the Westin Building Exchange Mortgage Loan, the 245 Park
Avenue Mortgage Loan and the 85 Broad Street Mortgage Loan. As a result,
Wells Fargo Bank, National Association is a servicing function participant in
the capacities described above, because it is servicing mortgage loans that
constituted 5% or more of the assets of the issuing entity as of its cut-off
date. The assessments of compliance with applicable servicing criteria and
accountants' attestation reports delivered by Wells Fargo Bank, National
Association in the capacities described above are listed in the Exhibit Index.

 Wells Fargo Bank, National
Association acts as trustee of the Park Center Phase I Mortgage Loan, the JW
Marriott Chicago Mortgage Loan, the 300 Montgomery Mortgage Loan, the Center 78
Mortgage Loan, the Carolina Hotel Portfolio Mortgage Loan and the Apex Fort
Washington Mortgage Loan. Pursuant to the Pooling and Servicing
Agreement, the trustee is required to provide an assessment of compliance with
applicable servicing criteria solely with respect to Item 1122(d)(2)(iii) of
Regulation AB (regarding advances of funds or guarantees regarding collections,
cash flows or distributions, and any interest or other fees charged for such
advances, are made, reviewed and approved as specified in the transaction
agreements). However, during the reporting period, the trustee did not perform
any servicing function with respect to the servicing criteria specified in Item
1122(d)(2)(iii) of Regulation AB. The master servicer or the special
servicer, to the extent required, performed the servicing function identified
with respect to Item 1122(d)(2)(iii) of Regulation AB, and each such party
included Item 1122(d)(2)(iii) of Regulation AB in the assessment of compliance
with applicable servicing criteria and accountant's attestation report for the
subject transaction. As a result, this Annual Report on Form 10-K does
not include an assessment of compliance with applicable servicing criteria of
the trustee. One or more other servicers of the Park Center Phase I Mortgage
Loan, the JW Marriott Chicago Mortgage Loan, the 300 Montgomery Mortgage Loan,
the Center 78 Mortgage Loan, the Carolina Hotel Portfolio Mortgage Loan and the
Apex Fort Washington Mortgage Loan have delivered one or more assessments of
compliance with respect to Item 1122(d)(2)(iii) of Regulation AB.

 Wilmington Trust, National
Association acts as trustee of the 245 Park Avenue Mortgage Loan, the 85 Broad
Street Mortgage Loan and the Westin Building Exchange Mortgage Loan.
Pursuant to the trust and servicing agreement for the 245 Park Avenue 2017-245P
Transaction, the pooling and servicing agreement for the CSAIL 2017-C8
Transaction and the pooling and servicing agreement for the BANK 2017-BNK7
Transaction, the trustee is required to provide an assessment of compliance
with applicable servicing criteria solely with respect to Item 1122(d)(2)(iii)
of Regulation AB (regarding advances of funds or guarantees regarding
collections, cash flows or distributions, and any interest or other fees
charged for such advances, are made, reviewed and approved as specified in the
transaction agreements). However, during the reporting period, the trustee did
not perform any servicing function with respect to the servicing criteria specified
in Item 1122(d)(2)(iii) of Regulation AB. The master servicer or the
special servicer, to the extent required, performed the servicing function
identified with respect to Item 1122(d)(2)(iii) of Regulation AB, and each such
party included Item 1122(d)(2)(iii) of Regulation AB in the assessment of
compliance with applicable servicing criteria and accountant's attestation
report for the subject transaction. As a result, this Annual Report on
Form 10-K does not include an assessment of compliance with applicable
servicing criteria of the trustee. One or more other servicers of the 245 Park
Avenue Mortgage Loan, the 85 Broad Street Mortgage Loan and the Westin Building
Exchange Mortgage Loan have delivered one or more assessments of compliance
with respect to Item 1122(d)(2)(iii) of Regulation AB.

 This Annual Report on Form 10-K
includes assessments of compliance with applicable servicing criteria and
accountants' attestation reports from CoreLogic Solutions, LLC. This
entity was engaged by the primary servicer of the 245 Park Avenue Mortgage
Loan, the 85 Broad Street Mortgage Loan and the Westin Building Exchange
Mortgage Loan to remit tax payments received from the escrow accounts of
borrowers to local taxing authorities, to report tax amounts due, to verify tax
parcel information, and to verify non-escrow tax payments. These servicing
functions are included within the servicing criteria set forth in Items
1122(d)(4)(xi) and 1122(d)(4)(xii) of Regulation AB. Therefore, under the
principles-based definition of "servicer" set forth in Item 1101(j) of
Regulation AB that looks to the functions that an entity performs, this vendor
is a "servicer" for the purposes of Item 1122 of Regulation AB. See
Compliance and Disclosure Interpretations, Section 301.01 (Item 1101(j)).

 This Annual
Report on Form 10-K includes an assessment of compliance with applicable
servicing criteria, accountants' attestation report and servicer compliance
statement from Computershare Trust Company, National Association (" CTCNA ").
CTCNA was engaged by Wells Fargo Bank, National Association (" Wells Fargo "),
in its capacity as certificate administrator and custodian, to perform certain
specified servicing functions identified in the assessment of compliance with
applicable servicing criteria and accountants' attestation reports. Wells
Fargo engaged CTCNA in connection with the sale of Wells Fargo's corporate
trust services business to CTCNA and its affiliates. Further, under the
principles-based definition of "servicer" set forth in Item 1101(j) of
Regulation AB that looks to the functions that an entity performs, this party
is a "servicer" for the purposes of Item 1123 of Regulation AB. See
Compliance and Disclosure Interpretations, Section 301.01 (Item 1101(j)).

 The assessments of compliance with
applicable servicing criteria, accountants' attestation reports and servicer
compliance statements of the certificate administrator of the 245 Park Avenue
Mortgage Loan, the 85 Broad Street Mortgage Loan and the Westin Building
Exchange Mortgage Loan are omitted from this Annual Report on Form 10-K as the
certificate administrator pursuant to the related pooling and servicing
agreement or trust and servicing agreement does not perform any activities that
address servicing criteria with respect to the issuing entity and because they
are each not a "servicer" that meets the criteria in Item 1108(a)(2)(i) through
(iii) of Regulation AB.

 With respect to the pari passu
loan combinations that include the 245 Park Avenue Mortgage Loan and the 85
Broad Street Mortgage Loan, the servicer compliance statements of Situs
Holdings, LLC as special servicer of the 245 Park Avenue Mortgage Loan and
Midland Loan Services, a Division of PNC Bank, National Association as special
servicer of the 85 Broad Street Mortgage Loan, listed on the Exhibit Index are
omitted from this Annual Report on Form 10-K as they are not required by Item
1123 of Regulation AB to be included on this Annual Report on Form 10-K because
it is an unaffiliated party that is not a "servicer" that meets the criteria in
Item 1108(a)(2)(i) through (iii) of Regulation AB.

 Item 1. Business.

 Item 1A. Risk Factors.

 Item 1B. Unresolved Staff Comments.

 None.

 Item 1C. Cybersecurity.

 Item 2. Properties.

 Item 3. Legal Proceedings.

 Item 4. Mine Safety Disclosures.

 Item 5. Market for Registrant's Common Equity,
Related Stockholder Matters and Issuer Purchases of Equity Securities.

 Item 6.

 [Reserved]

 Item 7. Management's Discussion and Analysis of
Financial Condition and Results of Operations.

 Item 7A. Quantitative and Qualitative Disclosures
About Market Risk.

 Item 8. Financial Statements and Supplementary Data.

 Item 9. Changes in and Disagreements With
Accountants on Accounting and Financial Disclosure.

 Item 9A. Controls and Procedures.

 Item 9B. Other Information.

 None.

 Item 9C. Disclosure Regarding Foreign Jurisdictions
that Prevent Inspections.

 None.

 Item 10. Directors, Executive Officers and Corporate
Governance.

 Item 11. Executive Compensation.

 Item 12. Security Ownership of Certain Beneficial
Owners and Management and Related Stockholder Matters.

 Item 13. Certain Relationships and Related
Transactions, and Director Independence.

 Item 14. Principal Accountant Fees and Services.

 ADDITIONAL DISCLOSURE ITEMS FOR REGULATION AB

 Item 1112(b) of Regulation AB, Significant Obligor
Financial Information.

 No single obligor represents 10% or more of the pool assets
held by the issuing entity.

 Item 1114(b)(2) of Regulation AB, Significant Enhancement
Provider Financial Information.

 No entity or group of affiliated entities provides any external credit
enhancement or other support for the certificates within this transaction as
described under Item 1114(a) of Regulation AB.

 Item 1115(b) of Regulation AB, Certain Derivatives
Instruments (Financial Information).

 No entity or group of affiliated entities provides any
derivative instruments or other support for the certificates within this
transaction as described under Item 1115 of Regulation AB.

 Item 1117 of Regulation AB, Legal Proceedings.

 The registrant knows of no material pending legal proceeding
involving the trust or any party related to the trust, other than routine
litigation incidental to the duties of those respective parties, and the
following, with respect to Wells Fargo Bank, National Association, as trustee,
as certificate administrator and as custodian.

 In December 2014, Phoenix Light SF Limited (Phoenix Light)
and certain related entities filed a complaint in the United States District
Court for the Southern District of New York alleging claims against Wells Fargo
Bank, N.A., in its capacity as trustee for a number of residential
mortgage-backed securities (RMBS) trusts. Complaints raising similar
allegations have been filed by Commerzbank AG in the Southern District of New
York, IKB International and IKB Deutsche Industriebank (together, IKB) in New
York state court, and Park Royal I LLC and Park Royal II LLC in New York state
court. In each case, the plaintiffs allege that Wells Fargo Bank, N.A., as
trustee, caused losses to investors, and plaintiffs assert causes of action
based upon, among other things, the trustee's alleged failure to notify and
enforce repurchase obligations of mortgage loan sellers for purported breaches
of representations and warranties, notify investors of alleged events of
default, and abide by appropriate standards of care following alleged events of
default. In July 2022, the district court dismissed Phoenix Light's claims and
certain of the claims asserted by Commerzbank AG, and subsequently entered
judgment in each case in favor of Wells Fargo Bank, N.A. In August 2022,
Phoenix Light and Commerzbank AG each appealed the district court's decision to
the United States Court of Appeals for the Second Circuit. Phoenix Light
dismissed its appeal in May 2023, terminating its case. In November 2023, Wells
Fargo Bank, N.A. entered into an agreement with IKB to resolve IKB's claims.
Wells Fargo Bank, N.A. previously settled two class actions filed by
institutional investors and an action filed by the National Credit Union
Administration with similar allegations.

 Item 1119 of Regulation AB, Affiliations and Certain
Relationships and Related Transactions.

 The information regarding this Item has been previously
provided in the prospectus of the Registrant relating to the issuing entity
filed on September 29, 2017 pursuant to Rule 424(b)(2).

 Item 1122 of Regulation AB, Compliance with Applicable
Servicing Criteria.

 The reports on assessments of compliance with the servicing
criteria for asset-backed securities and related attestation reports on such
assessments of compliance with respect to the mortgage loans are attached
hereto under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit AA
to the Pooling and Servicing Agreement incorporated by reference as Exhibit 4.1
to this Annual Report on Form 10-K is a chart identifying the entities
participating in a servicing function for the transaction responsible for each
applicable servicing criteria set forth in Item 1122(d).

 The reports on assessments of compliance with the servicing
criteria for asset-backed securities and related attestation reports on such
assessments of compliance with respect to the 245 Park Avenue Mortgage Loan,
which is being serviced and administered pursuant to the trust and servicing
agreement for the 245 Park Avenue 2017-245P Transaction, are attached hereto
under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit L to the
trust and servicing agreement for the 245 Park Avenue 2017-245P Transaction
incorporated by reference as Exhibit 4.2 to this Annual Report on Form 10-K is
a chart identifying the entities participating in a servicing function for the
245 Park Avenue 2017-245P Transaction responsible for each applicable servicing
criteria set forth in Item 1122(d).

 The reports on assessments of compliance with the servicing
criteria for asset-backed securities and related attestation reports on such
assessments of compliance with respect to the 85 Broad Street Mortgage Loan,
which is being serviced and administered pursuant to the pooling and servicing
agreement for the CSAIL 2017-C8 Transaction, are attached hereto under Item 15
to this Annual Report on Form 10-K. Attached as Exhibit AA to the pooling and
servicing agreement for the CSAIL 2017-C8 Transaction incorporated by reference
as Exhibit 4.3 to this Annual Report on Form 10-K is a chart identifying the
entities participating in a servicing function for the CSAIL 2017-C8
Transaction responsible for each applicable servicing criteria set forth in
Item 1122(d).

 The reports on assessments of compliance with the servicing
criteria for asset-backed securities and related attestation reports on such
assessments of compliance with respect to the Westin Building Exchange Mortgage
Loan, which is being serviced and administered pursuant to the pooling and
servicing agreement for the BANK 2017-BNK7 Transaction, are attached hereto
under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit AA to the
pooling and servicing agreement for the BANK 2017-BNK7 Transaction incorporated
by reference as Exhibit 4.4 to this Annual Report on Form 10-K is a chart
identifying the entities participating in a servicing function for the BANK
2017-BNK7 Transaction responsible for each applicable servicing criteria set
forth in Item 1122(d).

 Item 1123 of Regulation AB, Servicer Compliance Statement.

 The servicer compliance statements are attached as Exhibits
to this Annual Report on Form 10-K.

 Item 15. Exhibit and Financial Statement Schedules

 (a) The following is a list of documents filed as part of
this Annual Report on Form 10-K:

 (1) Not applicable

 (2) Not applicable

 (3) See below

 4.1
 Pooling and Servicing Agreement, dated as of September 1,
2017, by and among Credit Suisse Commercial Mortgage Securities Corp., as
Depositor, KeyBank National Association, as Master Servicer, Rialto Capital
Advisors, LLC, as Special Servicer, Wells Fargo Bank, National Association, as
Certificate Administrator and as Trustee and Pentalpha Surveillance LLC, as
Operating Advisor and as Asset Representation Reviewer (filed as Exhibit 4.1 to
the registrant's Current Report on Form 8-K filed on September 29, 2017 under

 4.2
 Trust and Servicing Agreement, dated as of May 30, 2017,
by and among J.P. Morgan Chase Commercial Mortgage Securities Corp., as
Depositor, Wells Fargo Bank, National Association, as Servicer, AEGON USA
Realty Advisors, LLC, as Special Servicer, Wells Fargo Bank, National
Association, as Certificate Administrator, Wilmington Trust, National
Association, as Trustee and Trimont Real Estate Advisors, LLC, as Operating
Advisor (filed as Exhibit 4.4 to the registrant's Current Report on Form 8-K
filed on September 29, 2017 under Commission File No. 333-207361-06 and
incorporated by reference herein).

 4.3
 Pooling and Servicing Agreement, dated as of June 1,
2017, by and among Credit Suisse Commercial Mortgage Securities Corp., as
Depositor, Wells Fargo Bank, National Association, as Master Servicer, Midland
Loan Services, a Division of PNC Bank, National Association, as Special
Servicer, Wells Fargo Bank, National Association, as Certificate Administrator,
Wilmington Trust, National Association, as Trustee and Park Bridge Lender
Services LLC, as Operating Advisor and as Asset Representation Reviewer (filed
as Exhibit 4.5 to the registrant's Current Report on Form 8-K filed on
September 29, 2017 under Commission File No. 333-207361-06 and incorporated by
reference herein).

 4.4
 Pooling and Servicing Agreement, dated as of September 1,
2017, by and among Wells Fargo Commercial Mortgage Securities, Inc., as
Depositor, Wells Fargo Bank, National Association, as General Master Servicer,
Rialto Capital Advisors, LLC, as General Special Servicer, National Cooperative
Bank, N.A., as NCB Master Servicer and as NCB Special Servicer, Wells Fargo
Bank, National Association, as Certificate Administrator, Wilmington Trust,
National Association, as Trustee, and Pentalpha Surveillance LLC, as Operating
Advisor and as Asset Representations Reviewer (filed as Exhibit 4.2 to the

 4.5
 Agreement Between Note Holders, dated as of September 29,
2017, by and between Column Financial, Inc., as Initial Note A-1 Holder and
Column Financial, Inc., as Initial A-2 Holder (filed as Exhibit 4.8 to the

 4.6
 Agreement Between Note Holders, dated as of September 5,
2017, by and between Wells Fargo Bank, National Association, as Initial Note
A-1 Holder and Column Financial, Inc., as Initial Note A-2 Holder (filed as
Exhibit 4.9 to the registrant's Current Report on Form 8-K filed on September
29, 2017 under Commission File No. 333-207361-06 and incorporated by reference
herein).

 4.7 Co-Lender Agreement, dated as of May 30, 2017, by and
among JPMorgan Chase Bank, National Association, Natixis Real Estate Capital
LLC, Societe Generale, Deutsche Bank, AG, New York Branch and Barclays Bank PLC
(filed as Exhibit 4.11 to the registrant's Current Report on Form 8-K filed on
September 29, 2017 under Commission File No. 333-207361-06 and incorporated by
reference herein).

 4.8 Co-Lender Agreement, dated as of June 13, 2017, by and
between Natixis Real Estate Capital LLC, as Initial Note A-A-1 Holder, as
Natixis Real Estate Capital LLC, as Initial Note A-A-2 Holder, Natixis Real
Estate Capital LLC, as Initial Note A-A-3 Holder, Natixis Real Estate Capital
LLC, as Initial Note A-B Holder, Natixis Real Estate Capital LLC, as Initial
Note B-A Holder and Natixis Real Estate Capital LLC, as Initial Note B-B Holder
(filed as Exhibit 4.13 to the registrant's Current Report on Form 8-K filed on
September 29, 2017 under Commission File No. 333-207361-06 and incorporated by
reference herein).

 4.9 Co-Lender Agreement, dated as of July 28, 2017, by and
between Natixis Real Estate Capital LLC, as Initial Note A-1 Holder, Natixis
Real Estate Capital LLC, as Initial Note A-2 Holder, Natixis Real Estate
Capital LLC, as Initial Note A-3 Holder, Natixis Real Estate Capital LLC, as
Initial Note B-1-A Holder, Natixis Real Estate Capital LLC, as Initial Note B-1-B
Holder and Natixis Real Estate Capital LLC, as Initial Note B-2 Holder (filed
as Exhibit 4.15 to the registrant's Current Report on Form 8-K filed on
September 29, 2017 under Commission File No. 333-207361-06 and incorporated by
reference herein).

 4.10 Co-Lender Agreement, dated as of September 29, 2017,
between Natixis Real Estate Capital LLC, as Note A-1 Holder and Natixis Real
Estate Capital LLC, as Note A-2 Holder (filed as Exhibit 4.16 to the

 4.11 Co-Lender Agreement, dated as of August 31, 2017, by and
between Natixis Real Estate Capital LLC, as Initial Note A-1 Holder, Natixis
Real Estate Capital LLC, as Initial Note A-2 Holder and Natixis Real Estate
Capital LLC, as Initial Junior Noteholder (filed as Exhibit 4.17 to the

 4.12 Co-Lender Agreement, dated as of July 31, 2017, between
Benefit Street Partners CRE Finance LLC, as Note A-1 Holder and Benefit Street
Partners CRE Finance LLC as Note A-2 Holder (filed as Exhibit 4.20 to the

 4.13 Co-Lender Agreement, dated as of June 16, 2017, between
Benefit Street Partners CRE Finance LLC, as Note A-1 Holder, Benefit Street
Partners CRE Finance LLC, as Note A-2 Holder and Benefit Street Partners CRE
Finance LLC, as Note A-3 Holder (filed as Exhibit 4.21 to the registrant's
Current Report on Form 8-K filed on September 29, 2017 under Commission File
No. 333-207361-06 and incorporated by reference herein).

 Rule 13a-14(d)/15d-14(d) Certifications.

Reports on assessment of compliance with servicing criteria for asset-backed
securities.

 33.1 KeyBank National Association, as Master Servicer

 33.2

 33.3
 Wells Fargo Bank, National Association, as Trustee
and Certificate Administrator

 33.4
Custodian

 33.5
 Pentalpha Surveillance LLC, as Operating Advisor

 33.6
as Servicing Function Participant for the Certificate Administrator

 33.7
as Servicing Function Participant for the Custodian

 33.8
of the Park Center Phase I Mortgage Loan (see Exhibit 33.1)

 33.9
of the Park Center Phase I Mortgage Loan (see Exhibit 33.2)

 33.10
Wells Fargo Bank, National Association, as Trustee of the Park Center Phase I

 33.11
Custodian of the Park Center Phase I Mortgage Loan (see Exhibit 33.4)

 33.12
the Park Center Phase I Mortgage Loan (see Exhibit 33.5)

 33.13

 33.14
of the JW Marriott Chicago Mortgage Loan (see Exhibit 33.1)

 33.15
of the JW Marriott Chicago Mortgage Loan (see Exhibit 33.2)

 33.16
Wells Fargo Bank, National Association, as Trustee of the JW Marriott Chicago

 33.17
 Wells Fargo Bank, National Association, as Custodian
of the JW Marriott Chicago Mortgage Loan (see Exhibit 33.4)

 33.18
the JW Marriott Chicago Mortgage Loan (see Exhibit 33.5)

 33.19

 33.20
of the 300 Montgomery Mortgage Loan (see Exhibit 33.1)

 33.21
of the 300 Montgomery Mortgage Loan (see Exhibit 33.2)

 33.22
Wells Fargo Bank, National Association, as Trustee of the 300 Montgomery

 33.23
Custodian of the 300 Montgomery Mortgage Loan (see Exhibit 33.4)

 33.24
the 300 Montgomery Mortgage Loan (see Exhibit 33.5)

 33.25

 33.26
of the Center 78 Mortgage Loan (see Exhibit 33.1)

 33.27
of the Center 78 Mortgage Loan (see Exhibit 33.2)

 33.28
Wells Fargo Bank, National Association, as Trustee of the Center 78 Mortgage
Loan (Omitted. See Explanatory Notes.)

 33.29
Custodian of the Center 78 Mortgage Loan (see Exhibit 33.4)

 33.30
the Center 78 Mortgage Loan (see Exhibit 33.5)

 33.31

 33.32
 KeyBank National Association, as Primary Servicer of
the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 33.1)

 33.33
of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 33.2)

 33.34
Wells Fargo Bank, National Association, as Trustee of the Carolina Hotel
Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

 33.35
Custodian of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 33.4)

 33.36
 Pentalpha Surveillance LLC, as
Operating Advisor of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit
33.5)

 33.37

 33.38
of the Apex Fort Washington Mortgage Loan (see Exhibit 33.1)

 33.39
of the Apex Fort Washington Mortgage Loan (see Exhibit 33.2)

 33.40
Wells Fargo Bank, National Association, as Trustee of the Apex Fort Washington

 33.41
Custodian of the Apex Fort Washington Mortgage Loan (see Exhibit 33.4)

 33.42
the Apex Fort Washington Mortgage Loan (see Exhibit 33.5)

 33.43

 33.44
Servicer of the 245 Park Avenue Mortgage Loan

 33.45
 Situs Holdings, LLC, as Special Servicer of the
245 Park Avenue Mortgage Loan

 33.46
Wilmington Trust, National Association, as Trustee of the 245 Park Avenue

 33.47
Custodian of the 245 Park Avenue Mortgage Loan (see Exhibit 33.4)

 33.48
 BellOak, LLC, as Operating Advisor of the 245 Park
Avenue Mortgage Loan

 33.49
Participant of the 245 Park Avenue Mortgage Loan

 33.50

 33.51
Servicer of the 85 Broad Street Mortgage Loan (see Exhibit 33.44)

 33.52
 Midland Loan Services, a Division of PNC Bank,
National Association, as Special Servicer of the 85 Broad Street Mortgage Loan

 33.53
Wilmington Trust, National Association, as Trustee of the 85 Broad Street

 33.54
Custodian of the 85 Broad Street Mortgage Loan (see Exhibit 33.4)

 33.55
 Park Bridge Lender Services LLC, as Operating
Advisor of the 85 Broad Street Mortgage Loan

 33.56
Participant of the 85 Broad Street Mortgage Loan (see Exhibit 33.49)

 33.57

 33.58
Servicer of the Westin Building Exchange Mortgage Loan (see Exhibit 33.44)

 33.59
of the Westin Building Exchange Mortgage Loan (see Exhibit 33.2)

 33.60
Wilmington Trust, National Association, as Trustee of the Westin Building
Exchange Mortgage Loan (Omitted. See Explanatory Notes.)

 33.61
 Wells Fargo Bank, National Association, as Custodian
of the Westin Building Exchange Mortgage Loan (see Exhibit 33.4)

 33.62
the Westin Building Exchange Mortgage Loan (see Exhibit 33.5)

 33.63
Participant of the Westin Building Exchange Mortgage Loan (see Exhibit 33.49)

 33.64

 Attestation reports
on assessment of compliance with servicing criteria for asset-backed
securities.

 34.1
 KeyBank National Association, as Master Servicer

 34.2

 34.3
 Wells Fargo Bank, National Association, as Trustee
and Certificate Administrator

 34.4
Custodian

 34.5
 Pentalpha Surveillance LLC, as Operating Advisor

 34.6
as Servicing Function Participant for the Certificate Administrator

 34.7
as Servicing Function Participant for the Custodian

 34.8
of the Park Center Phase I Mortgage Loan (see Exhibit 34.1)

 34.9
of the Park Center Phase I Mortgage Loan (see Exhibit 34.2)

 34.10
Wells Fargo Bank, National Association, as Trustee of the Park Center Phase I

 34.11
Custodian of the Park Center Phase I Mortgage Loan (see Exhibit 34.4)

 34.12
the Park Center Phase I Mortgage Loan (see Exhibit 34.5)

 34.13

 34.14
of the JW Marriott Chicago Mortgage Loan (see Exhibit 34.1)

 34.15
of the JW Marriott Chicago Mortgage Loan (see Exhibit 34.2)

 34.16
Wells Fargo Bank, National Association, as Trustee of the JW Marriott Chicago

 34.17
Custodian of the JW Marriott Chicago Mortgage Loan (see Exhibit 34.4)

 34.18
the JW Marriott Chicago Mortgage Loan (see Exhibit 34.5)

 34.19

 34.20
of the 300 Montgomery Mortgage Loan (see Exhibit 34.1)

 34.21
of the 300 Montgomery Mortgage Loan (see Exhibit 34.2)

 34.22
Wells Fargo Bank, National Association, as Trustee of the 300 Montgomery

 34.23
Custodian of the 300 Montgomery Mortgage Loan (see Exhibit 34.4)

 34.24
the 300 Montgomery Mortgage Loan (see Exhibit 34.5)

 34.25

 34.26
of the Center 78 Mortgage Loan (see Exhibit 34.1)

 34.27
of the Center 78 Mortgage Loan (see Exhibit 34.2)

 34.28
Wells Fargo Bank, National Association, as Trustee of the Center 78 Mortgage
Loan (Omitted. See Explanatory Notes.)

 34.29
Custodian of the Center 78 Mortgage Loan (see Exhibit 34.4)

 34.30
the Center 78 Mortgage Loan (see Exhibit 34.5)

 34.31
 Computershare Trust Company, National Association, as
Servicing Function Participant for the Custodian (see Exhibit 34.7)

 34.32
of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 34.1)

 34.33
of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 34.2)

 34.34
Wells Fargo Bank, National Association, as Trustee of the Carolina Hotel
Portfolio Mortgage Loan (Omitted. See Explanatory Notes.)

 34.35
Custodian of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 34.4)

 34.36
 Pentalpha Surveillance LLC, as
Operating Advisor of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit
34.5)

 34.37

 34.38
of the Apex Fort Washington Mortgage Loan (see Exhibit 34.1)

 34.39
of the Apex Fort Washington Mortgage Loan (see Exhibit 34.2)

 34.40
Wells Fargo Bank, National Association, as Trustee of the Apex Fort Washington

 34.41
Custodian of the Apex Fort Washington Mortgage Loan (see Exhibit 34.4)

 34.42
the Apex Fort Washington Mortgage Loan (see Exhibit 34.5)

 34.43

 34.44
Servicer of the 245 Park Avenue Mortgage Loan

 34.45
 Situs Holdings, LLC, as Special Servicer of the
245 Park Avenue Mortgage Loan

 34.46
Wilmington Trust, National Association, as Trustee of the 245 Park Avenue

 34.47
Custodian of the 245 Park Avenue Mortgage Loan (see Exhibit 34.4)

 34.48
 BellOak, LLC, as Operating Advisor of the 245 Park
Avenue Mortgage Loan

 34.49
Participant of the 245 Park Avenue Mortgage Loan

 34.50

 34.51
Servicer of the 85 Broad Street Mortgage Loan (see Exhibit 34.44)

 34.52
 Midland Loan Services, a Division of PNC Bank,
National Association, as Special Servicer of the 85 Broad Street Mortgage Loan

 34.53
Wilmington Trust, National Association, as Trustee of the 85 Broad Street Mortgage
Loan (Omitted. See Explanatory Notes.)

 34.54
Custodian of the 85 Broad Street Mortgage Loan (see Exhibit 34.4)

 34.55
 Park Bridge Lender Services LLC, as Operating
Advisor of the 85 Broad Street Mortgage Loan

 34.56
Participant of the 85 Broad Street Mortgage Loan (see Exhibit 34.49)

 34.57

 34.58
Servicer of the Westin Building Exchange Mortgage Loan (see Exhibit 34.44)

 34.59
of the Westin Building Exchange Mortgage Loan (see Exhibit 34.2)

 34.60
Wilmington Trust, National Association, as Trustee of the Westin Building
Exchange Mortgage Loan (Omitted. See Explanatory Notes.)

 34.61
Custodian of the Westin Building Exchange Mortgage Loan (see Exhibit 34.4)

 34.62
the Westin Building Exchange Mortgage Loan (see Exhibit 34.5)

 34.63
Participant of the Westin Building Exchange Mortgage Loan (see Exhibit 34.49)

 34.64

Servicer compliance statements.

 35.1
 KeyBank National Association, as Master Servicer

 35.2

 35.3
Certificate Administrator

 35.4
as Servicing Function Participant for the Certificate Administrator

 35.5
of the Park Center Phase I Mortgage Loan (see Exhibit 35.1)

 35.6
of the Park Center Phase I Mortgage Loan (see Exhibit 35.2)

 35.7
of the JW Marriott Chicago Mortgage Loan (see Exhibit 35.1)

 35.8
 Rialto Capital Advisors, LLC, as Special
Servicer of the JW Marriott Chicago Mortgage Loan (see Exhibit 35.2)

 35.9
 KeyBank National Association, as
Primary Servicer of the 300 Montgomery Mortgage Loan (see Exhibit 35.1)

 35.10
of the 300 Montgomery Mortgage Loan (see Exhibit 35.2)

 35.11
of the Center 78 Mortgage Loan (see Exhibit 35.1)

 35.12
of the Center 78 Mortgage Loan (see Exhibit 35.2)

 35.13
of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 35.1)

 35.14
of the Carolina Hotel Portfolio Mortgage Loan (see Exhibit 35.2)

 35.15
of the Apex Fort Washington Mortgage Loan (see Exhibit 35.1)

 35.16
of the Apex Fort Washington Mortgage Loan (see Exhibit 35.2)

 35.17
Servicer of the 245 Park Avenue Mortgage Loan

 35.18
Situs Holdings, LLC, as Special Servicer of the 245 Park Avenue Mortgage Loan
(Omitted. See Explanatory Notes.)

 35.19
Servicer of the 85 Broad Street Mortgage Loan (see Exhibit 35.17)

 35.20
Midland Loan Services, a Division of PNC Bank, National Association, as Special
Servicer of the 85 Broad Street Mortgage Loan (Omitted. See Explanatory Notes.)

 35.21
Servicer of the Westin Building Exchange Mortgage Loan (see Exhibit 35.17)

 35.22
of the Westin Building Exchange Mortgage Loan (see Exhibit 35.2)

 99.1 Mortgage Loan Purchase Agreement, dated as of September
19, 2017, between Credit Suisse Commercial Mortgage Securities Corp. and Column
Financial, Inc. (filed as Exhibit 99.1 to the registrant's Current Report on
Form 8-K filed on September 29, 2017 under Commission File No. 333-207361-06
and incorporated by reference herein).

 99.2 Mortgage Loan Purchase Agreement, dated as of September
19, 2017, between Credit Suisse Commercial Mortgage Securities Corp. and
Natixis Real Estate Capital LLC (filed as Exhibit 99.2 to the registrant's
Current Report on Form 8-K filed on September 29, 2017 under Commission File
No. 333-207361-06 and incorporated by reference herein).

 99.3 Mortgage Loan Purchase Agreement, dated as of September
19, 2017, between Credit Suisse Commercial Mortgage Securities Corp. and
Benefit Street Partners CRE Finance LLC (filed as Exhibit 99.3 to the

 (b) The exhibits required to be filed by the
Registrant pursuant to Item 601 of Regulation S-K are listed above.

 (c) Not Applicable.

 SIGNATURES

 Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned, thereunto duly authorized.

 Credit Suisse Commercial Mortgage
Securities Corp.

(Depositor)

 /s/
Lawrence Chun

 Lawrence Chun, Authorized Signatory

 (senior officer in charge of
securitization of the depositor)

 Date: March 11, 2024