A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASEImporter::BuildUniqueRepresentation of the file code/AssetLib/ASE/
A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASEImporter::BuildUniqueRepresentation of the file code/AssetLib/ASE/ASELoader.cpp of the component ASE File Handler. The manipulation of the argument mIndices leads to out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 6.0 is able to address this issue. The patch is named 7c705fde418d68cca4e8eff56be01b2617b0d6fe. It is recommended to apply a patch to fix this issue.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pyassimp | <= 5.4.3 | no fix |
References
- https://vuldb.com/?id.302067
- https://vuldb.com/?submit.524589
- https://github.com/assimp/assimp/issues/6021
- https://github.com/assimp/assimp/issues/6021#issue-2877378829
- https://vuldb.com/?ctiid.302067
- https://github.com/assimp/assimp/commit/7c705fde418d68cca4e8eff56be01b2617b0d6fe
- https://github.com/assimp/assimp/pull/6045
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
-- Platform
- Python (PyPI)
- Package
pyassimp- Disclosed
- 31.03.2025
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2025-261 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: pyassimp
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 33
- First → latest
- 09.2024 10.2025
- Without a fix
- 33
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 16
- Medium 14
- Low 2
Disclosures per year
- 2024: 6
- 2025: 27
- 2026: 0
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A vulnerability classified as critical has been found in Open Asset Import Library Assimp 5.4.3. This affects the function Assimp::ASEImporter::BuildUniqueRepresentation of the file code/AssetLib/ASE/ this entry
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