# CVE-2026-10199: Assimp null pointer dereference in glTF2Asset.h

Source: https://junglewise.ai/threats/cve-2026-10199-assimp-null-pointer-dereference-in-gltf2asset-h  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-31. Updated: 2026-05-31  
License: CC BY 4.0 with a link back

CVE-2026-10199 · Severity: low · CVSS 3.3 · Published 2026-05-31

Assimp is a widely used library for importing various 3D model formats into applications. A vulnerability was found where processing a specially crafted glTF 3D file can cause the application to crash. This could lead to a denial-of-service, potentially disrupting operations or causing data loss in software that relies on Assimp to process 3D assets.

Technologies: [Assimp](https://junglewise.ai/threats/technologies/assimp). Vendors: [Assimp](https://junglewise.ai/threats/vendors/assimp).

## Quick answers

**Is CVE-2026-10199 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-10199 being exploited in the wild.

**How severe is CVE-2026-10199?** Low severity, with a CVSS score of 3.3, published 31 May 2026.

**Which products and versions are affected?** Assimp up to 6.0.4.

**Is there a fix for CVE-2026-10199?** A patch was published on 2026-05-26: Fix merged into master branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-10199 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-10199?** Check whether you run Assimp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A null pointer dereference exists in Assimp up to version 6.0.4 within the glTF2Importer::ImportAnimations function in glTF2Asset.h. The vulnerability is triggered when a glTF2 animation channel references a node index that is missing or null in the nodes array, causing the LazyDict::operator[] to dereference a null pointer. An attacker can exploit this by providing a malformed glTF file, leading to a denial-of-service (application crash). The issue has been addressed in commit d24b85319bd70c65883a2b96613e07e23fb95981 by implementing proper validation of the node reference before dereferencing.

## Affected products

- Assimp Assimp up to 6.0.4

## Timeline

- 2026-05-12: other: Issue reported and pull request created
- 2026-05-26: patched: Fix merged into master branch
- 2026-05-31: disclosed: Vulnerability disclosed and CVE assigned

## References

- [https://github.com/assimp/assimp/](https://github.com/assimp/assimp/)
- [https://github.com/assimp/assimp/commit/d24b85319bd70c65883a2b96613e07e23fb95981](https://github.com/assimp/assimp/commit/d24b85319bd70c65883a2b96613e07e23fb95981)
- [https://github.com/assimp/assimp/issues/6611](https://github.com/assimp/assimp/issues/6611)
- [https://github.com/assimp/assimp/pull/6646](https://github.com/assimp/assimp/pull/6646)
- [https://github.com/user-attachments/files/27194148/poc.zip](https://github.com/user-attachments/files/27194148/poc.zip)
- [https://vuldb.com/cve/CVE-2026-10199](https://vuldb.com/cve/CVE-2026-10199)
- [https://vuldb.com/submit/821179](https://vuldb.com/submit/821179)

## Related threats

- [Assimp NULL pointer dereference in Ogre3D importer](https://junglewise.ai/threats/cve-2026-111128-assimp-through-6-0-5-contains-a-null-pointer-dereference)
- [Assimp out-of-bounds read in PLY file handler](https://junglewise.ai/threats/cve-2026-108573-a-vulnerability-was-detected-in-open-asset-import-library-assimp)
- [Assimp MDLImporter heap-based buffer overflow in AddBonesToNodeGraph](https://junglewise.ai/threats/cve-2026-19970-assimp-mdlimporter-heap-based-buffer-overflow-in)
- [Assimp MDL importer heap buffer overflow](https://junglewise.ai/threats/cve-2026-19969-assimp-mdl-importer-heap-buffer-overflow)
- [Assimp heap buffer overflow in LWO2 model parser](https://junglewise.ai/threats/cve-2026-19968-assimp-heap-buffer-overflow-in-lwo2-model-parser)