# CVE-2026-117608: Assimp through 6.0.5 Heap Out-of-Bounds Read via MD2 Importer Integer Overflow

Status: published. Published: 2026-10-28. Updated: 2026-11-03.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/assimp/assimp/pull/6963
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/assimp/assimp/commit/7dbc85d9218fae017d4fad70269e7569f7b0c870

## Affected products and versions

- assimp / assimp (assimp/assimp): ≥ 0; ≤ 6.0.5 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 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; source: CNA: VulnCheck

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.14% as of 2026-11-02; percentile 2.98%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-190

## Exploit evidence

- exploit: https://github.com/assimp/assimp/issues/6929 (ADP: CISA-ADP)

## References

- https://github.com/assimp/assimp/issues/6929 (CNA: VulnCheck; issue-tracking)

- https://github.com/assimp/assimp/pull/6963 (CNA: VulnCheck; patch, issue-tracking)

- https://github.com/assimp/assimp/commit/7dbc85d9218fae017d4fad70269e7569f7b0c870 (CNA: VulnCheck; patch)

- https://github.com/assimp/assimp/blob/v6.0.5/code/AssetLib/MD2/MD2Loader.cpp#L171-L176 (CNA: VulnCheck; technical-description)

- https://github.com/assimp/assimp (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/assimp-through-6.0.5-heap-out-of-bounds-read-via-md2-importer-integer-overflow (CNA: VulnCheck; third-party-advisory)

- https://github.com/assimp/assimp/issues/6929 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-117608; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-117608; retrieved 2026-11-03; source updated Not reported

Revision: 178fd783227ba1685e796e83442bb0e17e42133d430928b82436c4f48c1410ce

Canonical: https://y2.dev/cve/CVE-2026-117608

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