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Case File

CVE-2023-5174

CRITICAL · CVSS 9.8 EPSS 0.99% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-09-27 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Windows, 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-2023-5174
Severity
CRITICAL
CVSS
9.8
EPSS
0.99%
Windows Firefox

Original NVD Description

If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

Related CVEs

Other vulnerabilities affecting the same vendor(s)