CVE-2021-1685: Microsoft Windows 10

High severity, CVSS 7.3. EPSS: 0.9% chance of exploitation in the next 30 days.

Windows AppX Deployment Extensions Elevation of Privilege Vulnerability

Affected products

• 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.