Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

vulnerability

Red Hat: CVE-2025-4085: firefox: thunderbird: Potential information leakage and privilege escalation in UITour actor

Severity
8
CVSS
(AV:N/AC:M/Au:S/C:C/I:P/A:P)
Published
Apr 29, 2025
Added
Jul 9, 2025
Modified
Jul 10, 2025

Description

An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability affects Firefox < 138 and Thunderbird < 138.

Solution

no-fix-redhat-rpm-package
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.