CVE-2025-3548 Open Asset Import Library Assimp File types.h Set heap-based overflow
A heap-based buffer overflow in Assimp's aiString::Set function 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
- Available
What is CVE-2025-3548?
CVE-2025-3548 is a medium-severity memory corruption vulnerability in Open Asset Import Library Assimp, published on 14 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp up to 5.4.3. This issue affects the function aiString::Set in the library include/assimp/types.h of the component File Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue.
Which versions are affected by CVE-2025-3548?
It affects 1 product.
Products include Assimp Assimp.
How do I fix CVE-2025-3548?
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-2025-3548 being exploited?
There is no known exploitation of CVE-2025-3548 in the wild and no public exploit code.
Other vulnerabilities in Open Asset Import Library Assimp
Sources
Also known as DEBIAN-CVE-2025-3548, GHSA-g9x2-fw6p-cg2m, JLSEC-2026-190, OESA-2026-1328, OESA-2026-1329, UBUNTU-CVE-2025-3548.