CVE-2025-6120: Open Asset Import Library Assimp HL1MDLLoader.cpp read_meshes heap-based overflow
A vulnerability classified as critical was found in Open Asset Import Library Assimp up to 5.4.3. Affected by this vulnerability is the function readmeshes in the library assimp/code/AssetLib/MDL/HalfLife/HL1MDLLoader.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-6120?
CVE-2025-6120 is classified as a critical vulnerability.
How do I fix CVE-2025-6120?
To mitigate CVE-2025-6120, upgrade to Assimp version 5.4.4 or later.
What type of vulnerability is CVE-2025-6120?
CVE-2025-6120 is a heap-based buffer overflow vulnerability.
Which versions of Assimp are affected by CVE-2025-6120?
Assimp versions up to and including 5.4.3 are affected by CVE-2025-6120.
What function in Assimp is impacted by CVE-2025-6120?
The function read_meshes in HL1MDLLoader.cpp is impacted by CVE-2025-6120.