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Case File

CVE-2019-11757

HIGH · CVSS 8.8 EPSS 1.34% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-01-08 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. 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-2019-11757
Severity
HIGH
CVSS
8.8
EPSS
1.34%
Firefox

Original NVD Description

When following the value's prototype chain, it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Related CVEs

Other vulnerabilities affecting the same vendor(s)