NULL pointer dereference in Assimp
CVE-2026-111128
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/assimp-ogre-mesh-bone-submesh-null-deref (technical-description)
- github.com/assimp/assimp/blob/392a658f9c271be965271f45e7521a1b80ea4392/code/Ass… (technical-description)
- github.com/assimp/assimp/blob/392a658f9c271be965271f45e7521a1b80ea4392/code/Ass… (technical-description)
- github.com/assimp/assimp (product)
- www.vulncheck.com/advisories/assimp-through-6.0.5-null-pointer-dereference-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111128?
- CVE-2026-111128 is a medium-severity vulnerability in Assimp, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-10-15.
- How severe is CVE-2026-111128?
- Medium severity. CVSS v3 base score is 5.5 out of 10.