CVE-2021-40452 HEVC Video Extensions Remote Code Execution Vulnerability

High 7.8 Published 15 Dec 2021 Updated 18 Nov 2024

An attacker can execute arbitrary code by exploiting a memory corruption vulnerability in the HEVC Video Extensions component.

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-2021-40452?

CVE-2021-40452 is a high-severity memory corruption vulnerability in Microsoft HEVC Video Extensions, published on 15 Dec 2021. 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

HEVC Video Extensions Remote Code Execution Vulnerability

Which versions are affected by CVE-2021-40452?

It affects 1 product.

Products include Microsoft Hevc Video Extensions.

How do I fix CVE-2021-40452?

No fix has been published for CVE-2021-40452 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-2021-40452 being exploited?

There is no known exploitation of CVE-2021-40452 in the wild and no public exploit code.

Sources

Also known as GHSA-c99h-54j2-mm4w.