CVE-2026-19999 Memory corruption in Assimp
A buffer overflow in Assimp's MDL7 parser allows remote attackers to execute arbitrary code or cause denial of service via crafted 3D model files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-19999?
CVE-2026-19999 is a medium-severity memory corruption vulnerability in Open Asset Import Library Assimp Assimp, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A security vulnerability has been detected in Open Asset Import Library Assimp Assimp 17c12da. The affected element is the function Assimp::MDLImporter::ParseBoneTrafoKeys_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component 3DGS MDL7 Bone Transformation Key Parser. The manipulation of the argument transmatrix_count/pcBoneTransforms leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is 50d767984e78d51b53e2020fdf0967fd624bc377. It is recommended to apply a patch to fix this issue.
Which versions are affected by CVE-2026-19999?
How do I fix CVE-2026-19999?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-19999 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19999 exists.
Sources
Also known as DEBIAN-CVE-2026-19999, GHSA-57fh-7xg4-7jjw, OESA-2026-4141, OESA-2026-4142, OESA-2026-4143, OESA-2026-4347 and 1 more.