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Update Summary

KB5072936 updates SQL Server 2022 CU22 to build 16.0.4230.2 and addresses CVE-2026-20803, a Microsoft SQL Server elevation of privilege vulnerability. It also restricts DBCC stackdump privileges so only sysadmin can invoke the dump file.

Update Details

Security

  • Fixes CVE-2026-20803, a Microsoft SQL Server elevation of privilege vulnerability.
  • Restricts DBCC stackdump privileges so only sysadmin can invoke the dump file.

Bug Fixes

  • Restricts privileges for the DBCC stackdump to sysadmin only.

Hints

  • Prerequisite: SQL Server 2022 or any SQL Server 2022 CU release through CU22 GDR must already be installed.
  • If you install a language pack after this update, you must reinstall the update.
  • For Linux, configure the Cumulative Update repository first, then update SQL Server packages using the platform-specific command.
  • Installing this security update is optional for computers that do not host Microsoft SQL Server Reporting Services.

Links

Product Information

Vendor: Microsoft

Product: SQL Server

Product type: Software

Variant: SQL Server 2022

Version: 16.0.4230.2

Vendor release date: Jan 13, 2026

Original release notes: View on vendor site

Published on updatealert.io: Aug 16, 2026