CVE-2025-2751 Open Asset Import Library Assimp CSM File CSMLoader.cpp InternReadFile out-of-bounds
An out-of-bounds read in Assimp's CSM file loader allows remote attackers to cause denial of service or disclose sensitive memory contents.
- 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-2025-2751?
CVE-2025-2751 is a medium-severity memory corruption vulnerability in Open Asset Import Library Assimp, published on 25 Mar 2025. 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 has been found in Open Asset Import Library Assimp 5.4.3 and classified as problematic. This vulnerability affects the function Assimp::CSMImporter::InternReadFile of the file code/AssetLib/CSM/CSMLoader.cpp of the component CSM File Handler. The manipulation of the argument na leads to out-of-bounds read. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-2751?
1 open source package ship an affected version, including pyassimp. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
pyassimp PyPI | All versions to 5.4.3 | None |
Products include Assimp Assimp.
How do I fix CVE-2025-2751?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-2751 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2751 exists.
Other vulnerabilities in Open Asset Import Library Assimp
Sources
Also known as DEBIAN-CVE-2025-2751, GHSA-345v-qrhv-w227, PYSEC-2025-162, UBUNTU-CVE-2025-2751.