CVE-2021-40765 Adobe Character Animator Memory Corruption could lead to Arbitrary code execution

High 7.8 Published 16 Mar 2022 Updated 16 Sep 2024

Attacker can execute arbitrary code via a malicious M4A file in Adobe Character Animator, requiring user interaction.

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-2021-40765?

CVE-2021-40765 is a high-severity memory corruption vulnerability in Adobe Character Animator (Preview 4), published on 16 Mar 2022. 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

Adobe Character Animator version 4.4 (and earlier) is affected by a memory corruption vulnerability when parsing a M4A file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.

Weakness: CWE-119, CWE-788

Which versions are affected by CVE-2021-40765?

It affects 1 product.

Products include Adobe Character Animator.

How do I fix CVE-2021-40765?

No fix has been published for CVE-2021-40765 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-2021-40765 being exploited?

There is no known exploitation of CVE-2021-40765 in the wild and no public exploit code.

Sources

Also known as GHSA-6vh7-7h6m-h6fv.