CVE-2026-19967 Open Asset Import Library Assimp File Compression.cpp decompressBlock heap-based overflow
A heap-based buffer overflow in Assimp's decompressBlock function 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-2026-19967?
CVE-2026-19967 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 security flaw has been discovered in Open Asset Import Library Assimp 17c12da. Impacted is the function Assimp::Compression::decompressBlock of the file code/Common/Compression.cpp of the component File Parser. Performing a manipulation results in heap-based buffer overflow. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-19967?
How do I fix CVE-2026-19967?
No fix has been published for CVE-2026-19967 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-2026-19967 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19967 exists.
Sources
Also known as DEBIAN-CVE-2026-19967, GHSA-34wg-h67q-gqwf, UBUNTU-CVE-2026-19967.