vulnerability

MFSA2023-30 Firefox: Security Vulnerabilities fixed in Firefox ESR 102.14 (CVE-2023-4049)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
Aug 1, 2023
Added
Aug 2, 2023
Modified
Mar 27, 2026

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.

Solution

mozilla-firefox-esr-upgrade-102_14
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.