# CVE-2025-3016: Open Asset Import Library Assimp MDL File MDLMaterialLoader.cpp ParseTextureColorData resource consumption

> Remote attackers can cause resource exhaustion in Assimp by crafting malicious MDL files, leading to denial of service.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 31 Mar 2025
- **Updated:** 31 Mar 2025
- **Also known as:** DEBIAN-CVE-2025-3016, GHSA-mpgp-fqh7-8mm2, PYSEC-2025-262, UBUNTU-CVE-2025-3016

## What is CVE-2025-3016?

CVE-2025-3016 is a medium-severity denial of service vulnerability in Open Asset Import Library Assimp, published on 31 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability classified as problematic was found in Open Asset Import Library Assimp 5.4.3. This vulnerability affects the function Assimp::MDLImporter::ParseTextureColorData of the file code/AssetLib/MDL/MDLMaterialLoader.cpp of the component MDL File Handler. The manipulation of the argument mWidth/mHeight leads to resource consumption. The attack can be initiated remotely. Upgrading to version 6.0 is able to address this issue. The name of the patch is 5d2a7482312db2e866439a8c05a07ce1e718bed1. It is recommended to apply a patch to fix this issue.

Weakness: CWE-404 (Improper Resource Shutdown or Release), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2025-3016?

1 open source package ship an affected version, including pyassimp. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `pyassimp` | PyPI | All versions to 5.4.3 | None |

Products: Assimp Assimp.

## How do I fix CVE-2025-3016?

Upgrade to a fixed version.

## Is CVE-2025-3016 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3016 exists.

## Other vulnerabilities in Open Asset Import Library Assimp

- [CVE-2022-45748](https://insights.sbomify.com/CVE-2022-45748/): Use after free in n/a (high 8.8)
- [CVE-2024-48423](https://insights.sbomify.com/CVE-2024-48423/): Use after free in n/a (high 8.4)
- [CVE-2024-45679](https://insights.sbomify.com/CVE-2024-45679/): Memory corruption in Assimp (high 8.4)
- [CVE-2024-40724](https://insights.sbomify.com/CVE-2024-40724/): Memory corruption in Assimp (high 8.4)
- [CVE-2022-38528](https://insights.sbomify.com/CVE-2022-38528/): Null dereference in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-3016 and fix it if it is affected.

What it is: CVE-2025-3016 is a medium-severity denial of service vulnerability in Open Asset Import Library Assimp, published on 31 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3016 exists.

Affected packages and fixed versions:
- pyassimp (PyPI): affected all versions up to 5.4.3; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-3016/ (Markdown: https://insights.sbomify.com/CVE-2025-3016/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-3016
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-3016
- OSV: https://osv.dev/vulnerability/CVE-2025-3016

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-3016/
Summaries are generated and may contain mistakes; the official description above is the record.