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Vulnerability · Published Jun 16, 2025 · Assigned by VulDB

CVE-2025-6120Open Asset Import Library Assimp HL1MDLLoader.cpp read_meshes heap-based overflow

Medium 5.3

In plain English

A medium-severity heap buffer overflow in Assimp from Open Asset Import Library. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 81.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12assimpno fix listedDEBIAN-CVE-2025-6120
Debian:13assimpno fix listedDEBIAN-CVE-2025-6120
Debian:14assimpno fix listedDEBIAN-CVE-2025-6120
Ubuntu:22.04:LTSassimpno fix listedUBUNTU-CVE-2025-6120
Ubuntu:24.04:LTSassimpno fix listedUBUNTU-CVE-2025-6120
Ubuntu:25.10assimpno fix listedUBUNTU-CVE-2025-6120
Ubuntu:26.04:LTSassimpno fix listedUBUNTU-CVE-2025-6120
Ubuntu:26.10assimpno fix listedUBUNTU-CVE-2025-6120

Affected products (as reported)

VendorProductVersions
Open Asset Import Library Assimp 5.4.05.4.15.4.25.4.3

Weakness: CWE-122, CWE-119 · Vector: 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

References