CVE-2026-10233 Assimp Half-Life 1 MDL Loader HL1MDLLoader.cpp read_sequence_infos out-of-bounds
A local attacker can trigger an out-of-bounds read in the Assimp library's Half-Life 1 MDL loader, potentially causing crashes or leaking memory.
- 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-2026-10233?
CVE-2026-10233 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 security vulnerability has been detected in Assimp up to 6.0.4. Affected by this issue is the function HL1MDLLoader::read_sequence_infos of the file HL1MDLLoader.cpp of the component Half-Life 1 MDL Loader. The manipulation of the argument aiString leads to out-of-bounds read. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. The project tagged the reported issue as bug.
Which versions are affected by CVE-2026-10233?
How do I fix CVE-2026-10233?
No fix has been published for CVE-2026-10233 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-2026-10233 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10233 exists.
Sources
Also known as DEBIAN-CVE-2026-10233, GHSA-964j-jgrw-m572, UBUNTU-CVE-2026-10233.