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Mozilla Firefox and Firefox ESR Privilege Escalation Vulnerability in Netmonitor Component

Vulnerability

A privilege escalation vulnerability has been identified in the Netmonitor component of Mozilla Firefox. This issue affects Firefox versions prior to 149 and Firefox ESR versions prior to 140.9.

Impact

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

Remediation

Users can upgrade to Firefox 149 or Firefox ESR 140.9 to address this vulnerability.

Added: Mar 24, 2026, 1:31 PM
Updated: Mar 24, 2026, 1:31 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
5.0
exploitability
4.7
remediation
7.7
relevance
4.6
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.