CVE-2023-21784 3D Builder Remote Code Execution Vulnerability

High 7.8 Published 10 Jan 2023 Updated 1 Jan 2025

Attackers can execute arbitrary code via a use-after-free vulnerability in Microsoft 3D Builder, requiring users to apply security patches.

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-2023-21784?

CVE-2023-21784 is a high-severity use after free vulnerability in Microsoft 3D Builder, published on 10 Jan 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

3D Builder Remote Code Execution Vulnerability

Weakness: CWE-416

Which versions are affected by CVE-2023-21784?

It affects 1 product.

Products include Microsoft 3d Builder.

How do I fix CVE-2023-21784?

No fix has been published for CVE-2023-21784 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2023-21784 being exploited?

There is no known exploitation of CVE-2023-21784 in the wild and no public exploit code.

Sources

Also known as GHSA-8hhm-74xw-h77v.