KB5065220: Fixes improper input validation

KB5065220 - Description of the security update for SQL Server 2022 CU20: September 9, 2025

Summary
This security update contains fixes and resolves vulnerabilities. To learn more about the vulnerabilities, see the following security advisories:

• CVE-2025-47997 - Microsoft SQL Server Information Disclosure Vulnerability
• CVE-2025-55227 - Microsoft SQL Server Elevation of Privilege Vulnerability

The Microsoft SQL Server components are updated to the following builds in this security update:

• SQL Server - product version: 16.0.4212.1, file version: 2022.160.4212.1

Improvements and fixes included in this update
A downloadable Excel workbook that contains a summary list of builds, together with their current support lifecycle, is available. The Excel file also contains detailed fix lists.

• Bug reference: 4519077
  Fixes an issue in which DMVs are used in specific scenarios to inspect the text of statements that are running in other sessions and might contain sensitive data.
• Bug reference: 4537398
  Fixes improper input validation that occurs during internal temporal history table cleanup and that enables attackers to run SQL code by having elevated privileges.