CVE-2026-10229 Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp read_meshes heap-based overflow
A heap-based buffer overflow in the Assimp library's Half-Life 1 MDL loader allows local attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-10229?
CVE-2026-10229 is a medium-severity memory corruption vulnerability in Assimp, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was determined in Assimp up to 6.0.4. This affects the function HL1MDLLoader::read_meshes of the file HL1MDLLoader.cpp of the component Half-Life 1 MDL Loader. This manipulation causes heap-based buffer overflow. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. The project tagged the reported issue as bug.
Which versions are affected by CVE-2026-10229?
How do I fix CVE-2026-10229?
No fix has been published for CVE-2026-10229 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-10229 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10229 exists.
Sources
Also known as DEBIAN-CVE-2026-10229, GHSA-797q-3h4c-269w, UBUNTU-CVE-2026-10229.