Assimp through 6.0.5 contains an integer overflow vulnerability in MD2Importer::ValidateHeader() that allows attackers to bypass frame table bounds checks using crafted header fields. Attackers can supply a malicious .md2 file whose numFrames and numVertices values wrap the 32-bit size check, causing heap out-of-bounds reads that crash applications or expose adjacent heap memory.
https://github.com/assimp/assimp/pull/6963
https://github.com/assimp/assimp/issues/6929
https://github.com/assimp/assimp/commit/7dbc85d9218fae017d4fad70269e7569f7b0c870
https://github.com/assimp/assimp/blob/v6.0.5/code/AssetLib/MD2/MD2Loader.cpp#L171-L176
Published: 2026-10-28
Updated: 2026-10-28
Base Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Severity: Medium
Base Score: 6.9
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: Medium