CVE-2023-29341 AV1 Video Extension Remote Code Execution Vulnerability

High 7.8 Published 9 May 2023 Updated 10 Jul 2025

A heap-based buffer overflow in the AV1 Video Extension allows remote attackers to execute arbitrary code.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-29341?

CVE-2023-29341 is a high-severity memory corruption vulnerability in Microsoft AV1 Video Extension, published on 9 May 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

AV1 Video Extension Remote Code Execution Vulnerability

Weakness: CWE-122

Which versions are affected by CVE-2023-29341?

It affects 1 product.

Products include Microsoft Av1 Video Extension.

How do I fix CVE-2023-29341?

No fix has been published for CVE-2023-29341 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-29341 being exploited?

There is no known exploitation of CVE-2023-29341 in the wild and no public exploit code.

Sources

Also known as GHSA-wvw4-jxm7-h4rv.