CVE-2025-21139 Substance3D - Designer | Heap-based Buffer Overflow (CWE-122)

High 7.8 Published 14 Jan 2025 Updated 12 Feb 2025

Heap-based buffer overflow in Substance3D Designer allows arbitrary code execution if a user opens a malicious file.

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-2025-21139?

CVE-2025-21139 is a high-severity memory corruption vulnerability in Adobe Substance 3d Designer, published on 14 Jan 2025. 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

Substance3D - Designer versions 14.0 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2025-21139?

It affects 1 product.

Products include Adobe Substance 3d Designer.

How do I fix CVE-2025-21139?

No fix has been published for CVE-2025-21139 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-2025-21139 being exploited?

There is no known exploitation of CVE-2025-21139 in the wild and no public exploit code.

All Adobe Substance 3d Designer vulnerabilities

Sources

Also known as GHSA-r5c9-3mr5-pgp3.