CVE-2026-19970 Open Asset Import Library Assimp Node MDLLoader.cpp AddBonesToNodeGraph_3DGS_MDL7 heap-based overflow
A heap-based buffer overflow in Assimp's MDL loader allows remote attackers to execute arbitrary code or cause denial of service via crafted 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
- None listed
What is CVE-2026-19970?
CVE-2026-19970 is a medium-severity memory corruption vulnerability in Open Asset Import Library 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 vulnerability was detected in Open Asset Import Library Assimp 17c12da. This affects the function Assimp::MDLImporter::AddBonesToNodeGraph_3DGS_MDL7 of the file code/AssetLib/MDL/MDLLoader.cpp of the component Node Parser. The manipulation of the argument bones_num results in heap-based buffer overflow. The attack can be executed remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-19970?
How do I fix CVE-2026-19970?
No fix has been published for CVE-2026-19970 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-2026-19970 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19970 exists.
Sources
Also known as DEBIAN-CVE-2026-19970, GHSA-r3jq-f86p-w9jr, UBUNTU-CVE-2026-19970.