CVE-2026-117608
Assimp through 6.0.5 Heap Out-of-Bounds Read via MD2 Importer Integer Overflow
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| assimp assimp assimp/assimp
github |
≥ 0; ≤ 6.0.5 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.9 medium |
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 | CNA: VulnCheck |
| 3.1 / 6.1 medium |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | CNA: VulnCheck |
Exploit evidence
- https://github.com/assimp/assimp/issues/6929
exploit · ADP: CISA-ADP
References
- https://github.com/assimp/assimp/issues/6929CNA: VulnCheck · issue-tracking
- https://github.com/assimp/assimp/pull/6963CNA: VulnCheck · patch, issue-tracking
- https://github.com/assimp/assimp/commit/7dbc85d9218fae017d4fad70269e7569f7b0c870CNA: VulnCheck · patch
- https://github.com/assimp/assimp/blob/v6.0.5/code/AssetLib/MD2/MD2Loader.cpp#L171-L176CNA: VulnCheck · technical-description
- https://github.com/assimp/assimpCNA: VulnCheck · product
- https://www.vulncheck.com/advisories/assimp-through-6.0.5-heap-out-of-bounds-read-via-md2-importer-integer-overflowCNA: VulnCheck · third-party-advisory
- https://github.com/assimp/assimp/issues/6929ADP: CISA-ADP · exploit
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