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Case File

CVE-2020-26972

CRITICAL · CVSS 9.8 EPSS 1.29% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-07 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Firefox. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-26972
Severity
CRITICAL
CVSS
9.8
EPSS
1.29%
Firefox

Original NVD Description

The lifecycle of IPC Actors allows managed actors to outlive their manager actors; and the former must ensure that they are not attempting to use a dead actor they have a reference to. Such a check was omitted in WebGL, resulting in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 84.

Related CVEs

Other vulnerabilities affecting the same vendor(s)