CVE-2023-21539: Microsoft Windows 10 20h2

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

Windows Authentication Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10 20h2: affected versions not specified
• Microsoft Windows 10 21h2: affected versions not specified
• Microsoft Windows 10 22h2: affected versions not specified
• Microsoft Windows 11 21h2: affected versions not specified
• Microsoft Windows 11 22h2: affected versions not specified
• Microsoft Windows Server 2022: affected versions not specified

Published 2023-01-10. Last modified 2026-06-17.