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Mozilla Firefox and Firefox ESR Privilege Escalation Vulnerability in the Debugger Component

Vulnerability

A privilege escalation vulnerability has been identified in the Debugger component of Mozilla Firefox. This issue allows for unauthorized elevation of privileges, potentially leading to unauthorized actions or access within the application. The vulnerability affects Firefox versions prior to 150 and Firefox ESR versions prior to 140.10.

Impact

Exploitation of this vulnerability allows for unauthorized privilege escalation within the application.

Remediation

Users can upgrade to Firefox 150 or Firefox ESR 140.10 to address this vulnerability.

Added: Apr 21, 2026, 1:52 PM
Updated: Apr 21, 2026, 1:52 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
5.0
exploitability
4.4
remediation
7.7
relevance
6.4
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.