Mozilla Firefox and Firefox Focus for Android Sandbox Escape Vulnerability

Vulnerability

A sandbox escape vulnerability has been identified in Mozilla Firefox and Firefox Focus for Android. This issue allows for unauthorized access or actions within the application's sandbox environment, potentially leading to exploitation of the application or its data. The vulnerability was present in Firefox versions prior to 151.

Impact

Exploitation of this vulnerability allows for a sandbox escape, meaning that an attacker could potentially break out of the application's restricted environment and execute unauthorized actions or access data.

Remediation

Users can upgrade to Firefox 151 to address this vulnerability.

Added: May 19, 2026, 2:51 PM
Updated: May 19, 2026, 2:51 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
7.5
exploitability
4.0
remediation
7.7
relevance
8.8
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.