What’s Vulnerable › Vulnerabilities

CVE-2025-5200: Open Asset Import Library Assimp MDLLoader.cpp InternReadFile_Quake1 out-of-bounds

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-05-26 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This issue affects the function MDLImporter::InternReadFile_Quake1 of the file assimp/code/AssetLib/MDL/MDLLoader.cpp. The manipulation leads to out-of-bounds read. 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 products

• Open Asset Import Library Assimp: before 5.4.3 — fixed in 5.4.3

How to fix

Upgrade to a fixed version: Open Asset Import Library Assimp 5.4.3. Check the vendor advisory for mitigations.

References

• https://github.com/assimp/assimp/issues/6128
• https://github.com/assimp/assimp/issues/6172
• https://github.com/user-attachments/files/20208985/line-452-reproducer.zip
• https://vuldb.com/?ctiid.310289
• https://vuldb.com/?id.310289
• https://vuldb.com/?submit.578005
• https://github.com/assimp/assimp/issues/6172

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