CVE-2021-27090: Microsoft Windows 10

High severity, CVSS 7.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Windows Secure Kernel Mode Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10: version 20h2 only; version 2004 only
• Microsoft Windows Server 2016: version 20h2 only; version 2004 only

Published 2021-04-13. Last modified 2026-06-17.