CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2021-42521
High (7.5) in vtk vtk. EPSS 1.3% chance of exploitation in the next 30 days. Fixed in vtk 9.0.1.
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.
Severity
- EPSS
- 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-476, CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vtk:vtk
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xfhg-9pjg-xg7g | PyPI | vtk | <9.0.1 | 9.0.1 |
| PYSEC-2022-255 | PyPI | vtk | <9.0.1 | 9.0.1 |
References
- https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549
- https://gitlab.kitware.com/vtk/vtk/issues/17818
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PCTMSAAVP4BW2HTZLDWMGKZ2WEC5OFLK/
- https://discourse.vtk.org/t/vtk-9-2-5-is-out/10549
- https://gitlab.kitware.com/vtk/vtk/issues/17818