CVE-2021-42521

HIGH

VTK < 9.2.5 - Denial of Service via NULL Pointer Dereference in vtkXMLTreeReader

Title source: llm

Description

There is a NULL pointer dereference vulnerability in VTK before 9.2.5, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn't check the return value of libxml2 API 'xmlDocGetRootElement', and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application.

References (3)

Core 3

Core References

Mailing List, Third Party Advisory vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/

Exploit, Issue Tracking, Third Party Advisory

https://gitlab.kitware.com/vtk/vtk/issues/17818

Various Sources

https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549

Scores

CVSS v3 7.5

EPSS 0.0107

EPSS Percentile 60.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-400 CWE-476

Status published

Products (2)

pypi/vtk 0 - 9.0.1PyPI

vtk/vtk < 9.0.0

Published Aug 25, 2022

Tracked Since Feb 18, 2026