# CVE-2025-57108: vtk9: Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap use-after-free vulnerability in vtkGLTFDocumentLoader

CVE-2025-57108 is fixed in vtk9 on 1 platform by DEBIAN-CVE-2025-57108 (version 9.6.2+ds-1), released October 31, 2025. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2025-57108
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0040
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 31, 2025

## Description

Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap use-after-free vulnerability in vtkGLTFDocumentLoader. The vulnerability manifests during mesh object copy operations where vector members are accessed after the underlying memory has been freed, specifically when handling GLTF files with corrupted or invalid mesh reference structures.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | vtk9 Debian 14 | 9.6.2+ds-1 | [DEBIAN-CVE-2025-57108](https://patchblox.com/security/data/fix/linux/debian-cve-2025-57108.md) | Oct 31, 2025 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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