CVE-2023-38170: HEVC Video Extensions Remote Code Execution Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-08 · updated 2026-08-10
Weakness: CWE-122

Description

HEVC Video Extensions Remote Code Execution Vulnerability

Affected products

Microsoft HEVC Video Extensions: before 2.0.61933.0 — fixed in 2.0.61933.0
Microsoft HEVC Video Extension: from 1.0.0.0 before 2.0.61931.0 — fixed in 2.0.61931.0
Microsoft HEVC Video Extensions: from 1.0.0 before 2.0.61933.0 — fixed in 2.0.61933.0

How to fix

Upgrade to a fixed version: Microsoft HEVC Video Extensions 2.0.61933.0; Microsoft HEVC Video Extension 2.0.61931.0; Microsoft HEVC Video Extensions 2.0.61933.0. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38170
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38170

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