CVE-2025-6120

Open Asset Import Library Assimp HL1MDLLoader.cpp read_meshes heap-based overflow

State: Published
Severity: 4.8 Medium
Published: Jun 16, 2025
Updated: Jun 16, 2025
Reserved: Jun 15, 2025

Description

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 read_meshes 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.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	5.3 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	4.3 Medium	AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-122 Heap-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
AssimpOpen Asset Import Library	5.4.0Affected 5.4.1Affected 5.4.2Affected 5.4.3Affected

References

VDB-312589 | Open Asset Import Library Assimp HL1MDLLoader.cpp read_meshes heap-based overflowvdb-entrytechnical-description
VDB-312589 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #591235 | Open Asset Import Library Assimp 5.4.3 Heap-based Buffer Overflowthird-party-advisory
https://github.com/assimp/assimp/issues/6220issue-tracking
https://github.com/assimp/assimp/issues/6220#issuecomment-2945018579issue-tracking
https://github.com/user-attachments/files/20605340/read_meshes_reproduce.tar.gzexploit

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.