CVE-2023-28246: Microsoft Windows 11 21h2

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Windows Registry Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11 21h2: before 10.0.22000.1817 (fixed in 10.0.22000.1817)
• Microsoft Windows 11 22h2: before 10.0.22621.1555 (fixed in 10.0.22621.1555)
• Microsoft Windows Server 2022: affected versions not specified

Published 2023-04-11. Last modified 2026-06-17.