CVE-2021-34439: Microsoft Windows 10

High severity, CVSS 7.8. EPSS: 2.7% chance of exploitation in the next 30 days.

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10: affected versions not specified; version 1607 only
• Microsoft Windows Server 2016: affected versions not specified

Published 2021-07-16. Last modified 2026-08-10.