CVE-2021-33778: Microsoft Hevc Video Extensions

High severity, CVSS 7.8. EPSS: 2.4% chance of exploitation in the next 30 days.

HEVC Video Extensions Remote Code Execution Vulnerability

Affected products

• Microsoft Hevc Video Extensions: before 1.0.41531.0 (fixed in 1.0.41531.0)

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