CVE-2023-36740 3D Viewer Remote Code Execution Vulnerability

High 7.8 Published 12 Sep 2023 Updated 30 Oct 2025

A heap-based buffer overflow in Microsoft 3D Viewer 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-2023-36740?

CVE-2023-36740 is a high-severity memory corruption vulnerability in Microsoft 3D Viewer, published on 12 Sep 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 Viewer Remote Code Execution Vulnerability

Weakness: CWE-122

Which versions are affected by CVE-2023-36740?

It affects 1 product.

Products include Microsoft 3d Viewer.

How do I fix CVE-2023-36740?

No fix has been published for CVE-2023-36740 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-2023-36740 being exploited?

There is no known exploitation of CVE-2023-36740 in the wild and no public exploit code.

Sources

Also known as GHSA-v22h-mmjm-2mxc.