CVE-2021-26414: Microsoft Windows 10

Medium severity, CVSS 4.8. EPSS: 49.8% chance of exploitation in the next 30 days.

Windows DCOM Server Security Feature Bypass

Affected products

• Microsoft Windows 10: affected versions not specified; version 20h2 only; version 21h1 only; version 21h2 only; version 1809 only; version 1909 only; …
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server: version 20h2 only; version 2004 only
• 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: any version

Published 2021-06-08. Last modified 2026-06-17.