---
id: "CVE-2026-129479"
page: "https://infrastack.ai/live/CVE-2026-129479"
kind: "vulnerability"
aliases: ["CVE-2026-129479"]
title: "Assimp: crafted Ogre mesh file crashes applications via integer overflow"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["3d-models", "assimp", "c++", "package"]
not_affected_if: ["no-ogre-mesh-loading", "trusted-input-only"]
published_at: "2026-11-15T14:17:27+00:00"
first_seen_at: "2026-11-15T14:36:16+00:00"
updated_at: "2026-11-15T14:37:40+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-129479", "first_seen_at": "2026-11-15T14:36:16+00:00"}]
exploit_sources: []
---

# Assimp: crafted Ogre mesh file crashes applications via integer overflow

Link for people: https://infrastack.ai/live/CVE-2026-129479 (this .md is for agents)

Assimp, a library for loading 3D model files, has an integer overflow in its Ogre binary mesh reader. A crafted .mesh file with a large index count wraps a 32-bit buffer size and causes a segmentation fault during scene teardown, crashing the application.

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

## How to check

- Check whether your application links Assimp and which version it uses, for example by searching your dependency manifests or build files for `assimp`.
- Confirm whether the app loads Ogre `.mesh` files from untrusted sources.

## Timeline

- 2026-11-15T14:36:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-129479

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/assimp-through-6.0.6-integer-overflow-via-ogrebinaryserializer-readsubmesh

## From the sources

Assimp through 6.0.6 contains an integer overflow vulnerability in OgreBinarySerializer::ReadSubMesh that allows attackers to crash applications by supplying crafted Ogre binary .mesh files. Attackers can set a large index count so the 32-bit buffer size wraps, causing a segmentation fault in aiMesh::~aiMesh() during scene teardown.

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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_