CVE-2021-34503: Microsoft Windows 10

High severity, CVSS 7.8. EPSS: 2.3% chance of exploitation in the next 30 days.

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

Affected products

• Microsoft Windows 10: version 1809 only; version 1909 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2021-07-14. Last modified 2026-08-10.