CVE-2025-2756

Name	CVE-2025-2756
Description	A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::AC3DImporter::ConvertObjectSection of the file code/AssetLib/AC/ACLoader.cpp of the component AC3D File Handler. The manipulation of the argument tmp leads to heap-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
assimp (PTS)	bullseye	5.0.1~ds0-2	vulnerable
	bookworm	5.2.5~ds0-1	vulnerable
	sid, trixie	5.4.3+ds-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
assimp	source	(unstable)	(unfixed)

[bookworm] - assimp <no-dsa> (Minor issue)
https://github.com/assimp/assimp/issues/6018