Buffer overflow in Assimp
CVE-2025-5166
A vulnerability was found in Open Asset Import Library Assimp 5.4.3. It has been classified as problematic. Affected is the function MDCImporter::InternReadFile of the file assimp/code/AssetLib/MDC/MDCLoader.cpp of the component MDC File Parser. The manipulation of the argument pcVerts 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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Assimp — versions 5.4.3
- Open Asset Import Library Assimp — versions 5.4.3
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (issue-tracking, Exploit)
- cna@vuldb.com (issue-tracking, Issue Tracking)
- cna@vuldb.com (Exploit, exploit)
Frequently asked questions
- What is CVE-2025-5166?
- CVE-2025-5166 is a low-severity vulnerability in Assimp, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2025-05-26.
- How severe is CVE-2025-5166?
- Low severity. CVSS v3 base score is 3.3 out of 10.