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Mozilla Firefox Privilege Escalation Vulnerability in the JavaScript Engine Component

Vulnerability

A privilege escalation vulnerability has been identified in the JavaScript Engine component of Mozilla Firefox. This issue was reported by Gary Kwong and is categorized as a low-impact vulnerability. The vulnerability arises from incorrect handling within the JavaScript engine, which could potentially be exploited to gain elevated privileges.

Impact

Exploitation of this vulnerability could lead to unauthorized privilege escalation, allowing a user to gain elevated rights or access within the application or system.

Remediation

Users can upgrade to Firefox 150 to address this vulnerability.

Added: Apr 21, 2026, 1:36 PM
Updated: Apr 21, 2026, 1:36 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
1.9
exploitability
4.2
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.