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Case File

CVE-2021-38500

HIGH · CVSS 8.8 EPSS 1.23% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-03 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

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-2021-38500
Severity
HIGH
CVSS
8.8
EPSS
1.23%
Firefox

Original NVD Description

Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.