Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone Assignment

Advisories

Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone Assignment

Severity: medium
Date: 10/15/2026
Affecting: assimp <= 6.0.5
CVE: CVE-2026-111128
CWE: CWE-476 NULL Pointer Dereference
CVSS: 6.8
CVSS V4 Vector: 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
References: https://hackmd.io/@haind-pwn/assimp-ogre-mesh-bone-submesh-null-deref
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://github.com/assimp/assimp
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: 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.

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