Description
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.
Metrics
CVSS 3.1 6.1/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| assimp | assimp | <= 6.0.5 |
References
- https://github.com/assimp/assimp
- https://github.com/assimp/assimp/blob/v6.0.5/code/AssetLib/MD2/MD2Loader.cpp#L171-L176
- https://github.com/assimp/assimp/commit/7dbc85d9218fae017d4fad70269e7569f7b0c870
- https://github.com/assimp/assimp/issues/6929
- https://github.com/assimp/assimp/pull/6963
- https://www.vulncheck.com/advisories/assimp-through-6.0.5-heap-out-of-bounds-read-via-md2-importer-integer-overflow
- https://github.com/assimp/assimp/issues/6929
Timeline
- Published
- Oct 28, 2026
- Last modified
- Nov 3, 2026
- NVD status
- Deferred