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Update Summary

KB5077465 is a security update for SQL Server 2022 GDR that fixes vulnerabilities including CVE-2026-21262 and CVE-2026-26115. It updates SQL Server 2022 to build 16.0.1170.5.

Update Details

Security

  • Fixes an elevation of privilege vulnerability in the version upgrade process for merge replication.
  • Blocks the ALTER USER operation if the target login is the system Administrator account.
  • CVE-2026-21262 - SQL Server Elevation of Privilege Vulnerability
  • CVE-2026-26115 - SQL Server Elevation of Privilege Vulnerability

Hints

  • Prerequisite: SQL Server 2022 or any SQL Server 2022 GDR release through this GDR must already be installed.
  • If you install a language pack after installing this update, you must reinstall the update.
  • The update is available through Windows Update, Microsoft Update Catalog, and Microsoft Download Center.
  • 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: 16.0.1170.5

Vendor release date: Mar 10, 2026

Original release notes: View on vendor site

Published on updatealert.io: Aug 16, 2026