CVE-2025-5204 Open Asset Import Library Assimp MDLMaterialLoader.cpp ParseSkinLump_3DGS_MDL7 out-of-bounds
A local attacker can trigger an out-of-bounds read in Assimp's MDL parser, potentially causing crashes or leaking memory contents.
- 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-2025-5204?
CVE-2025-5204 is a medium-severity memory corruption vulnerability in Open Asset Import Library Assimp, published on 26 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability classified as problematic has been found in Open Asset Import Library Assimp 5.4.3. This affects the function MDLImporter::ParseSkinLump_3DGS_MDL7 of the file assimp/code/AssetLib/MDL/MDLMaterialLoader.cpp. The manipulation leads to out-of-bounds read. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used. The project decided to collect all Fuzzer bugs in a main-issue to address them in the future.
Which versions are affected by CVE-2025-5204?
It affects 1 product.
Products include Assimp Assimp.
How do I fix CVE-2025-5204?
No fix published yet.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-5204 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5204 exists.
Other vulnerabilities in Open Asset Import Library Assimp
Sources
Also known as DEBIAN-CVE-2025-5204, GHSA-xpvq-w32j-6px4, JLSEC-2026-195, UBUNTU-CVE-2025-5204.