What’s Vulnerable › Vulnerabilities

CVE-2025-2591: Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 divide by zero

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-03-21 · updated 2026-06-17
• Weakness: CWE-369

Description

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function MDLImporter::InternReadFile_Quake1 of the file code/AssetLib/MDL/MDLLoader.cpp. The manipulation of the argument skinwidth/skinheight leads to divide by zero. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The patch is identified as ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd. It is recommended to apply a patch to fix this issue.

Affected products

• Open Asset Import Library Assimp: 5.4.3

References

• https://github.com/assimp/assimp/issues/6009
• https://github.com/assimp/assimp/issues/6009#issue-2877367021
• https://github.com/assimp/assimp/pull/6047
• https://github.com/assimp/assimp/pull/6047/commits/ab66a1674fcfac87aaba4c8b900b315ebc3e7dbd
• https://vuldb.com/?ctiid.300574
• https://vuldb.com/?id.300574
• https://vuldb.com/?submit.517781

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