CVE-2023-35644: Microsoft Windows 10 1809

High severity, CVSS 7.8. EPSS: 6.3% chance of exploitation in the next 30 days.

Windows Sysmain Service Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 1809: before 10.0.17763.5206 (fixed in 10.0.17763.5206)
• Microsoft Windows 10 21h2: before 10.0.19041.3803 (fixed in 10.0.19041.3803)
• Microsoft Windows 10 22h2: before 10.0.19045.3803 (fixed in 10.0.19045.3803)
• Microsoft Windows 11 21h2: before 10.0.22000.2652 (fixed in 10.0.22000.2652)
• Microsoft Windows 11 22h2: before 10.0.22621.2861 (fixed in 10.0.22621.2861)
• Microsoft Windows 11 23h2: before 10.0.22631.2861 (fixed in 10.0.22631.2861)
• Microsoft Windows Server 2019: affected versions not specified
• Microsoft Windows Server 2022: affected versions not specified

Published 2023-12-12. Last modified 2026-06-17.