Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone Assignment

{
  "id": "7aa55759d0baa10e2921cf45e8126e2bd9475c83d7048359b67e184fd8fd2147",
  "url": "https://osv.dev/vulnerability/CVE-2026-111128",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone Assignment",
    "summary": "Assimp through 6.0.5 contains a NULL pointer dereference vulnerability in the Ogre3D importer that allows attackers to crash applications via unvalidated bone indices in OgreStructs.cpp. Attackers can supply a crafted .mesh and .skeleton file referencing a missing bone, causing BoneById() to return null and crash the host process.",
    "evidence": "osv:CVE-2026-111128",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-111128",
      "aliases": [
        "CVE-2026-111128"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/assimp/assimp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "392a658f9c271be965271f45e7521a1b80ea4392"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "6.0.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "6.0.5"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.0.5",
            "v6.0.4",
            "v6.0.3",
            "v6.0.2",
            "v6.0.1",
            "v6.0.0",
            "v5.4.3",
            "v5.4.2",
            "v5.4.1",
            "v5.4.0",
            "v5.3.1",
            "v5.3.0",
            "v5.2.5",
            "v5.2.4",
            "v5.2.3",
            "v5.2.2",
            "v5.2.0",
            "v5.2.1",
            "5.2.0",
            "v5.1.4",
            "v5.1.6",
            "v5.1.5",
            "v5.1.3",
            "v5.1.2",
            "v5.1.1",
            "v5.1.0",
            "v5.1.0.rc1",
            "v5.0.0",
            "v.5.0.0.rc2",
            "v.5.0.0.rc1",
            "v4.1.0",
            "v4.0.0",
            "v4.0.0.rc1",
            "v3.3.1",
            "v3.3",
            "v3.2",
            "v3.1.1",
            "v3.1-rc2",
            "Release3.1_RC1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111128.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:53.236746682Z",
      "provider": "osv",
      "references": [
        "https://github.com",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111128.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-111128",
        "https://www.vulncheck.com/advisories/assimp-through-6.0.5-null-pointer-dereference-via-ogre-importer-bone-assignment",
        "https://github.com/assimp/assimp",
        "https://github.com/assimp/assimp/blob/392a658f9c271be965271f45e7521a1b80ea4392/code/AssetLib/Ogre/OgreStructs.cpp#L621-L634",
        "https://github.com/assimp/assimp/blob/392a658f9c271be965271f45e7521a1b80ea4392/code/AssetLib/Ogre/OgreStructs.cpp#L914-L921",
        "https://hackmd.io/@haind-pwn/assimp-ogre-mesh-bone-submesh-null-deref"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-476"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111128.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-111128",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 522295,
  "published_at": "2026-10-15T18:57:24.175+00:00"
}