CVE-2021-1669: Microsoft Remote Desktop

High severity, CVSS 8.8. EPSS: 3.2% chance of exploitation in the next 30 days.

Windows Remote Desktop Security Feature Bypass Vulnerability

Affected products

• Microsoft Remote Desktop: affected versions not specified
• Microsoft Remote Desktop Client: affected versions not specified
• Microsoft Windows 10: affected versions not specified; version 20h2 only; version 1607 only; version 1803 only; version 1809 only; version 1909 only; …
• Microsoft Windows Server 2016: affected versions not specified; version 20h2 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2021-01-12. Last modified 2026-06-17.