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SQL Server 2022 CU22 + GDR SQL Server 2022 CU22 + GDR Security update
Patch Tuesday

KB5072936

KB5072936: Security update for SQL Server 2022, CU branch, January 2026. DBCC stackdump is restricted to sysadmins

In short

Addresses CVE-2026-20803, an SQL Server elevation-of-privilege vulnerability, and limits DBCC stackdump to sysadmins.

Does it affect you? Applies to: Installations of SQL Server 2022 on Windows or Linux, including systems on a CU through CU22 GDR. The update sets the product version to 16.0.4230.2.

Build
16.0.4230.2
Servicing branch
CU
Security
1 fixed
Restart
Required

For servers on the CU branch: they install cumulative updates, which also bring fixes beyond security. Servers on the GDR branch (security fixes only) get a separate update. Which branch am I on?

What changes

Fix 1 change

Security Infrastructure

  • Only sysadmins can invoke DBCC stackdump to create a dump file.1
    Restricts privileges for DBCC stackdump on Linux and Windows.

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2026-01-13
Classification
Security Updates
Type
Cumulative update
Servicing branch
CU
Restart
Required
Replaces
KB5068450, KB5068406, KB5065865, KB5065220
+18 earlier KB5063814, KB5059390, KB5058721, KB5054531, KB5050771, KB5048038, KB5048033, KB5046862, KB5046059, KB5041321, KB5042578, KB5038325, KB5040939, KB5036432, KB5036343, KB5033663, KB5032679, KB5033592
Replaced by
KB5077464
VersionBuildChannel
2022 16.0.4230.2 General availability

Security

1 vulnerability fixed
1 important
VulnerabilitySeverityCVSS
CVE-2026-20803
Microsoft SQL Server Elevation of Privilege Vulnerability
 Important 7.2

Downloads (Microsoft Update Catalog)

Package 2022
463.1 MB
sqlserver2022-kb5072936-x64.exe Main update · KB5072936 SHA-1: 0dbb45a4…e12351

Updated components

150 files changed since the previous update for the same versions.

Top changed componentsFiles
SQL Server Engine113
SQL Server Analysis Services6
SQL Server PolyBase2

Sources

Updated
Cited passages from Microsoft's official notes (1)
  1. 1. Restricts privileges for the DBCC stackdump so that only the sysadmin can invoke the dump file. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 1 quoted passage · compared with Microsoft's page on Sep 26, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 5/5, clarity 4/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake