Description
A vulnerability, which was classified as critical, has been found in Open Asset Import Library Assimp 5.4.3. Affected by this issue is the function Assimp::LWO::AnimResolver::UpdateAnimRangeSetup of the file code/AssetLib/LWO/LWOAnimation.cpp of the component LWO 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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Open Asset Import Library | Assimp | 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | qt5-qt3d +2 | 5.15.9-2.el9_6 | RHSA-2025:12842 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.4 EUS | qt5-qt3d +2 | 5.15.9-2.el9_4 | RHSA-2025:15407 |
| RHEL 9.2 E4S | qt5-qt3d +2 | 5.15.3-2.el9_2 | RHSA-2025:15347 |
| RHEL 9.0 E4S | qt5-qt3d +2 | 5.15.2-10.el9_0 | RHSA-2025:15463 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | qt5-qt3d | 5.15.9-2.el9_6 | RLSA-2025:12842 |
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.amzn2.0.6 | ALAS2-2025-2903 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | qt5-qt3d +2 | 5.15.9-2.el9_6 | ELSA-2025-12842 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | pyassimp | <= 5.4.3 | — | PYSEC-2025-169 |
Advisories 9
- RHSA-2025:15463 Red Hat Security Advisory: qt5-qt3d security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- RHSA-2025:15407 Red Hat Security Advisory: qt5-qt3d security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- RHSA-2025:15347 Red Hat Security Advisory: qt5-qt3d security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- RHSA-2025:12842 Red Hat Security Advisory: qt5-qt3d security update Red Hat Security Advisories (RHSA) · Jul 12, 2026
- openSUSE-SU-2025:15209-1 assimp-devel-6.0.2-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- RLSA-2025:12842 Moderate: qt5-qt3d security update Rocky Linux Security Advisories · Oct 7, 2025
- WID-SEC-2025-1977 Red Hat Enterprise Linux (assimp): Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Sep 7, 2025
- ELSA-2025-12842 Moderate: qt5-qt3d security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Aug 5, 2025
- ALAS2-2025-2903 Moderate: qt5-qt3d security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 24, 2025
References
- VDB-303104 | Open Asset Import Library Assimp LWO File LWOAnimation.cpp UpdateAnimRangeSetup heap-based overflow vdb-entry technical-description
- VDB-303104 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #542246 | Open Asset Import Library Assimp >=5.4.3 Heap-based Buffer Overflow third-party-advisory
- https://github.com/assimp/assimp/issues/6023 issue-tracking
- https://github.com/assimp/assimp/issues/6023#issue-2877381000 exploit issue-tracking