What’s Vulnerable › Vulnerabilities

CVE-2025-5203: Open Asset Import Library Assimp ParsingUtils.h SkipSpaces 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. It has been rated as problematic. Affected by this issue is the function SkipSpaces in the library assimp/include/assimp/ParsingUtils.h. The manipulation leads to out-of-bounds read. Local access is required to approach this attack. 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/6175
• https://github.com/user-attachments/files/20209469/reproducer.zip
• https://vuldb.com/?ctiid.310292
• https://vuldb.com/?id.310292
• https://vuldb.com/?submit.578012
• https://github.com/assimp/assimp/issues/6175

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