AUGUST 5, 2026
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Case File

CVE-2021-42521

HIGH · CVSS 7.5 EPSS 1.09%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-08-25 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2021-42521
Severity
HIGH
CVSS
7.5
EPSS
1.09%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)