---
id: "CVE-2026-129480"
page: "https://infrastack.ai/live/CVE-2026-129480"
kind: "vulnerability"
aliases: ["CVE-2026-129480"]
title: "Assimp: crafted MD2 model file reads past heap buffer"
severity: "medium"
cvss: 5.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["3d-models", "assimp", "c++", "package"]
not_affected_if: ["no-md2-import", "trusted-input-only"]
published_at: "2026-11-15T14:17:27+00:00"
first_seen_at: "2026-11-15T14:36:16+00:00"
updated_at: "2026-11-15T14:37:45+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-129480", "first_seen_at": "2026-11-15T14:36:16+00:00"}]
exploit_sources: []
---

# Assimp: crafted MD2 model file reads past heap buffer

Link for people: https://infrastack.ai/live/CVE-2026-129480 (this .md is for agents)

Assimp, a library that loads 3D model files, reads past the end of a heap buffer when parsing a crafted .md2 file with a bad frame size header. An attacker who supplies such a file can crash the application or leak adjacent heap memory into the imported mesh.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check whether your project depends on Assimp, for example `assimp` in your build files or a bundled `libassimp` package.
- Look for code that loads user-supplied `.md2` files through Assimp.
- Confirm the installed Assimp version with the tool your build uses; the sources do not give a check command.

## Timeline

- 2026-11-15T14:36:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-129480

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/assimp-through-6.0.6-heap-out-of-bounds-read-via-md2-importer-framesize

## From the sources

Assimp through 6.0.6 contains a heap out-of-bounds read vulnerability in MD2Importer::InternReadFile that allows attackers to read past the file buffer via an unvalidated stored frameSize header field. Attackers can supply a crafted .md2 file loaded with a non-zero keyframe selected to crash the application or leak adjacent heap memory into the imported mesh.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_