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Medium

Assimp through 6.0.5 Heap Out-of-Bounds Read via MD2 Importer Integer Overflow

Type: advisorySources: Official CVE List

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.

Products
assimp
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-117608
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 18:14 UTC · Revision 1

Source evidence

Assimp through 6.0.5 Heap Out-of-Bounds Read via MD2 Importer Integer Overflow

core-cve · Original source

Published 28 Oct 2026, 02:03 UTC

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.

cve:CVE-2026-117608

assimp

Fixed versions: Not specified

Complete source record
{
  "id": "671c2b55646f273603bce2a6bf8fc083f86db4d8e230fdf35d427d61faf3ca9e",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-117608",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Assimp through 6.0.5 Heap Out-of-Bounds Read via MD2 Importer Integer Overflow",
    "summary": "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.",
    "evidence": "cve:CVE-2026-117608",
    "products": [
      {
        "name": {
          "value": "assimp",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-117608",
      "aliases": [
        "CVE-2026-117608"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6.9,
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "vectorString": "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",
            "userInteraction": "PASSIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 6.1,
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
            "integrityImpact": "NONE",
            "userInteraction": "REQUIRED",
            "attackComplexity": "LOW",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "LOW"
          }
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/assimp/assimp",
          "vendor": "assimp",
          "product": "assimp",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.5"
            }
          ],
          "packageURL": "pkg:github/assimp/assimp",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-28T02:03:17.365Z",
      "provider": "cve",
      "references": [
        "https://github.com/assimp/assimp/issues/6929",
        "https://github.com/assimp/assimp/pull/6963",
        "https://github.com/assimp/assimp/commit/7dbc85d9218fae017d4fad70269e7569f7b0c870",
        "https://github.com/assimp/assimp/blob/v6.0.5/code/AssetLib/MD2/MD2Loader.cpp#L171-L176",
        "https://github.com/assimp/assimp",
        "https://www.vulncheck.com/advisories/assimp-through-6.0.5-heap-out-of-bounds-read-via-md2-importer-integer-overflow"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-28T02:03:17.365Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-117608",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 406279,
  "published_at": "2026-10-28T02:03:17.365+00:00"
}