{"id":"PYSEC-2025-171","details":"A vulnerability, which was classified as critical, was found in Open Asset Import Library Assimp 5.4.3. Affected is the function Assimp::MD3Importer::ValidateSurfaceHeaderOffsets of the file code/AssetLib/MD3/MD3Loader.cpp of the component File Handler. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.","aliases":["CVE-2025-3549"],"modified":"2026-05-21T15:00:17.601334409Z","published":"2025-04-14T03:15:16.823Z","references":[{"type":"ADVISORY","url":"https://vuldb.com/?id.304590"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.546414"},{"type":"REPORT","url":"https://github.com/assimp/assimp/issues/6070"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.304590"},{"type":"EVIDENCE","url":"https://github.com/user-attachments/files/19580481/Assimp_MD3Importer_ValidateSurfaceHeaderOffsets-hbo.zip"}],"affected":[{"package":{"name":"pyassimp","ecosystem":"PyPI","purl":"pkg:pypi/pyassimp"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.4.3"}]}],"versions":["0.1","3.3","4.1.1","4.1.2","4.1.3","4.1.4","5.2.5"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/pyassimp/PYSEC-2025-171.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}