CVE-2023-21690: Microsoft Windows 10 1507

Critical severity, CVSS 9.8. EPSS: 27.5% chance of exploitation in the next 30 days.

Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10 1507: before 10.0.10240.19747 (fixed in 10.0.10240.19747)
• Microsoft Windows 10 1607: before 10.0.14393.5717 (fixed in 10.0.14393.5717)
• Microsoft Windows 10 1809: before 10.0.17763.4010 (fixed in 10.0.17763.4010)
• Microsoft Windows 10 20h2: before 10.0.19042.2604 (fixed in 10.0.19042.2604)
• Microsoft Windows 10 21h2: before 10.0.19044.2604 (fixed in 10.0.19044.2604)
• Microsoft Windows 10 22h2: before 10.0.19045.2604 (fixed in 10.0.19045.2604)
• Microsoft Windows 11 21h2: before 10.0.22000.1574 (fixed in 10.0.22000.1574)
• Microsoft Windows 11 22h2: before 10.0.22621.1265 (fixed in 10.0.22621.1265)
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified
• Microsoft Windows Server 2022: affected versions not specified

Published 2023-02-14. Last modified 2026-08-19.