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Case File

CVE-2023-4049

MEDIUM · CVSS 5.9 EPSS 0.63% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-08-01 · 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-2023-4049
Severity
MEDIUM
CVSS
5.9
EPSS
0.63%
Firefox

Original NVD Description

Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.