---
id: CVE-2026-111128
title: >-
  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
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…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: assimp
product: assimp
affected:
  - assimp <= 6.0.5
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:17:26.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-111128'
references:
  - url: 'https://github.com/assimp/assimp'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/assimp/assimp/blob/392a658f9c271be965271f45e7521a1b80ea4392/code/AssetLib/Ogre/OgreStructs.cpp#L621-L634
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/assimp/assimp/blob/392a658f9c271be965271f45e7521a1b80ea4392/code/AssetLib/Ogre/OgreStructs.cpp#L914-L921
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind-pwn/assimp-ogre-mesh-bone-submesh-null-deref'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/assimp-through-6.0.5-null-pointer-dereference-via-ogre-importer-bone-assignment
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
ingestedAt: '2026-10-15T19:25:46.407Z'
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-15T19:45:28.056543Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.