What’s Vulnerable › Vulnerabilities

CVE-2021-31967: VP9 Video Extensions Remote Code Execution Vulnerability

• Severity: medium (CVSS 6.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-08 · updated 2026-06-17

Description

VP9 Video Extensions Remote Code Execution Vulnerability

Affected products

• Microsoft VP9 Video Extensions: before 1.0.41182.0 — fixed in 1.0.41182.0
• Microsoft VP9 Video Extensions: from 1.0.0.0 before 1.0.41182.0 — fixed in 1.0.41182.0

How to fix

Upgrade to a fixed version: Microsoft VP9 Video Extensions 1.0.41182.0; Microsoft VP9 Video Extensions 1.0.41182.0. Check the vendor advisory for mitigations.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31967
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31967

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