CVE-2021-34534: Microsoft Windows 10

Medium severity, CVSS 6.8. EPSS: 2.2% chance of exploitation in the next 30 days.

Windows MSHTML Platform Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10: affected versions not specified; version 20h2 only; version 21h1 only; version 1607 only; version 1809 only; version 1909 only; …
• Microsoft Windows Server 2016: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified

Published 2021-08-12. Last modified 2026-08-10.