SARA / Free Tools / CVE / CVE-2023-36728

CVE-2023-36728 — Microsoft SQL Server Denial of Service Vulnerability

Microsoft SQL Server Denial of Service Vulnerability

CVSS

5.5 MEDIUM

EPSS

0.08% (top 76.50%)

CWE

CWE-125

Published

2023-10-10T17:07:32.864Z

Last modified

2025-04-14T22:46:01.074Z

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

01What is this vulnerability?

Microsoft SQL Server Denial of Service Vulnerability

Vendor	Product	Versions
Microsoft	Microsoft SQL Server 2019 (CU 22)	15.0.0
Microsoft	Microsoft SQL Server 2022 (CU 8)	15.0.0
Microsoft	Microsoft SQL Server 2017 (GDR)	14.0.0
Microsoft	Microsoft SQL Server 2014 Service Pack 3 (GDR)	12.0.0
Microsoft	Microsoft SQL Server 2014 Service Pack 3 (CU 4)	12.0.0
Microsoft	Microsoft SQL Server 2019 (GDR)	15.0.0
Microsoft	Microsoft SQL Server 2016 Service Pack 3 (GDR)	13.0.0
Microsoft	Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack	13.0.0
Microsoft	Microsoft SQL Server 2017 (CU 31)	14.0.0
Microsoft	Microsoft SQL Server 2022 (GDR)	16.0.0
Microsoft	Microsoft OLE DB Driver 19 for SQL Server	19.0.0
Microsoft	Microsoft OLE DB Driver 18 for SQL Server	18.0.0
Microsoft	Microsoft ODBC Driver 17 for SQL Server on Windows	17.0.0.0
Microsoft	Microsoft ODBC Driver 17 for SQL Server on Linux	17.0.0.0
Microsoft	Microsoft ODBC Driver 17 for SQL Server on MacOS	17.0.0.0
Microsoft	Microsoft ODBC Driver 18 for SQL Server on Windows	18.0.0.0
Microsoft	Microsoft ODBC Driver 18 for SQL Server on Linux	18.0.0.0
Microsoft	Microsoft ODBC Driver 18 for SQL Server on MacOS	18.0.0.0

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

msrc.microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36728

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