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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Open Asset Import Library | Assimp | 5.4.0, 5.4.1, 5.4.2, 5.4.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | assimp | 6.0.2+ds-1 | — |
| Debian 13 | assimp | No fix yet | — |
| Debian 12 | assimp | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | assimp | No fix yet | — |
| Ubuntu 26.04 LTS | assimp | No fix yet | — |
| Ubuntu 25.10 | assimp | No fix yet | — |
| Ubuntu 24.04 LTS | assimp | No fix yet | — |
| Ubuntu 22.04 LTS | assimp | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | assimp | No fix yet | — |
| Ubuntu 18.04 LTS | assimp | No fix yet | — |
| Ubuntu 16.04 LTS | assimp | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | assimp | 6.0.2-1.1 | openSUSE-SU-2025:15209-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | qt5-qt3d +2 | 5.15.3-1.amzn2.0.5 | ALAS2-2025-2848 |
Advisories 2
- openSUSE-SU-2025:15209-1 assimp-devel-6.0.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2-2025-2848 Moderate: qt5-qt3d security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 13, 2025
References
- VDB-304589 | Open Asset Import Library Assimp File types.h Set heap-based overflow vdb-entry technical-description
- VDB-304589 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #546413 | Open Asset Import Library Assimp v5.4.3 Heap-based Buffer Overflow third-party-advisory
- https://github.com/assimp/assimp/issues/6068 issue-tracking
- https://github.com/user-attachments/files/19580584/aiString_Set-hbo.zip exploit
- https://github.com/assimp/assimp/pull/6073 issue-tracking patch