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CVE-2025-6120

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

Published: Jun 16, 2025Updated: Apr 29, 2026 Sources: CVE List NVDCWE-119
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 89.6%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-119CWE-122

Affected Products

assimpassimp
Library
OSS Libraries / generic-library
AssimpOpen Asset Import Library
Library
OSS Libraries / generic-library
assimposs-projectOSS Librariesaka assimp library, asset importer
open asset import libraryoss-projectOSS Librariesaka assimp, assimp library

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
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References

https://github.com/assimp/assimp/issues/6220
github.com
https://github.com/assimp/assimp/issues/6220#issuecomment-2945018579
github.com
https://github.com/user-attachments/files/20605340/read_meshes_reproduce.tar.gz
github.com
and 3 more references View all →

Timeline

Published
Jun 16, 2025
Last Updated
Apr 29, 2026

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