AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2020-15683

CRITICAL · CVSS 9.8 EPSS 2.65% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-10-22 · 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-2020-15683
Severity
CRITICAL
CVSS
9.8
EPSS
2.65%
Firefox

Original NVD Description

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.