Microsoft SQL Server SQL Server 2019 Update Version 15.0.2160.4
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Update Summary
KB5077470 updates SQL Server 2019 GDR to 15.0.2160.4 and addresses elevation of privilege vulnerabilities CVE-2026-21262 and CVE-2026-26115. It also includes fixes for merge replication upgrade and ALTER USER security behavior.
Update Details
Security
- Fixes elevation of privilege vulnerabilities CVE-2026-21262 and CVE-2026-26115.
- Fixes an elevation of privilege vulnerability in the version upgrade process for merge replication.
- Blocks
ALTER USERwhen the target login is the system Administrator account.
Bug Fixes
- Fixes an elevation of privilege issue in the version upgrade process for merge replication.
- Blocks
ALTER USERwhen the target login is the system Administrator account.
Hints
- Prerequisite: SQL Server 2019 or any SQL Server 2019 GDR release through this GDR must already be installed.
- If you install a language pack after this update, reinstall the update.
- The Microsoft Update Catalog package is available for all servers running SQL Server, even if Reporting Services is not installed; installation is optional on computers without SQL Server Reporting Services.
Links
-
Microsoft Download Center package
https://www.microsoft.com/en-us/download/details.aspx?id=0
Product Information
Vendor: Microsoft
Product: SQL Server
Product type: Software
Variant: SQL Server 2019
Version: 15.0.2160.4
Vendor information published: Mar 10, 2026
Original release notes: View on vendor site
Published on updatealert.io: Aug 16, 2026