CVE-2025-15538 Open Asset Import Library Assimp LWOMaterial.cpp FindUVChannels use after free
A use-after-free flaw in Assimp's LWO importer allows local attackers to execute arbitrary code or cause denial of service via crafted files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-15538?
CVE-2025-15538 is a medium-severity use after free vulnerability in Open Asset Import Library Assimp, published on 18 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A security vulnerability has been detected in Open Asset Import Library Assimp up to 6.0.2. Affected by this vulnerability is the function Assimp::LWOImporter::FindUVChannels of the file /src/assimp/code/AssetLib/LWO/LWOMaterial.cpp. Such manipulation leads to use after free. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. This and similar defects are tracked and handled via issue #6128.
Which versions are affected by CVE-2025-15538?
It affects 1 product.
Products include Assimp Assimp.
How do I fix CVE-2025-15538?
Apply the vendor's patch.
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-2025-15538 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15538 exists.
Other vulnerabilities in Open Asset Import Library Assimp
Sources
Also known as DEBIAN-CVE-2025-15538, GHSA-xm92-8fcx-x654, JLSEC-2026-189, UBUNTU-CVE-2025-15538.