CVE-2023-21768: Microsoft Windows 11

High severity, CVSS 7.8. EPSS: 65.4% chance of exploitation in the next 30 days.

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11: version 21h2 only; version 22h2 only
• Microsoft Windows Server 2022: affected versions not specified

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