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Update Summary

KB5084817 is a security update for SQL Server 2019 GDR that fixes elevation-of-privilege vulnerabilities, including CVE-2026-32167 and CVE-2026-32176. It updates SQL Server 2019 to build 15.0.2165.1.

Update Details

Security

  • Fixes an elevation of privilege vulnerability in SQL Server linked servers that could let a low-privileged user gain sysadmin permissions.
  • Addresses SQL injection in SQL Agent that could allow an authorized attacker to elevate privileges over the network.
  • CVE-2026-32167 - SQL Server Elevation of Privilege Vulnerability
  • CVE-2026-32176 - SQL Server Elevation of Privilege Vulnerability

Known Issues

  • Linked server queries that use MSDASQL with a provider string (@provstr) can fail with error 7416: 'Access to the remote server is denied because no login-mapping exists.'
  • A stricter Database Engine connection validation check can reject some linked server configurations that use the MSDASQL provider.

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 installing this update, 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 2019

Version: 15.0.2165.1

Vendor release date: Apr 14, 2026

Original release notes: View on vendor site

Published on updatealert.io: Aug 16, 2026