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Update Summary

KB5084816 updates SQL Server 2019 to build 15.0.4465.1 and fixes elevation-of-privilege vulnerabilities, including CVE-2026-32167 and CVE-2026-32176. It also includes linked server and SQL Agent security fixes.

Update Details

Security

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

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 connection validation check in the Database Engine may reject some linked server configurations that use the MSDASQL provider.

Hints

  • Prerequisite: SQL Server 2019 or any SQL Server 2019 CU release through this SQL Server 2019 CU32 GDR must already be installed.
  • If you install a language pack after installing this update, you must reinstall the update.
  • For Linux, the Cumulative Update repository must be configured before updating SQL Server 2019 to the latest CU.

Links

Product Information

Vendor: Microsoft

Product: SQL Server

Product type: Software

Variant: SQL Server 2019

Version: 15.0.4465.1

Vendor release date: Apr 14, 2026

Original release notes: View on vendor site

Published on updatealert.io: Aug 16, 2026