What’s Vulnerable › Vulnerabilities

CVE-2022-21917: HEVC Video Extensions Remote Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-11 · updated 2026-06-17
• Weakness: CWE-787

Description

HEVC Video Extensions Remote Code Execution Vulnerability

Affected products

• Microsoft HEVC Video Extensions: before 1.0.43421.0 — fixed in 1.0.43421.0
• Microsoft HEVC Video Extensions: from 1.0.0 before 1.0.43421.0 & 1.0.43422.0 — fixed in 1.0.43421.0 & 1.0.43422.0

How to fix

Upgrade to a fixed version: Microsoft HEVC Video Extensions 1.0.43421.0; Microsoft HEVC Video Extensions 1.0.43421.0 & 1.0.43422.0. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21917
• https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0008/MNDT-2022-0008.md
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21917

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