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Mozilla Firefox and Firefox ESR WebRTC Signaling Component Vulnerability Allowing Undefined Behavior

Vulnerability

A vulnerability has been identified in the WebRTC signaling component of Mozilla Firefox. This issue leads to undefined behavior and affects Firefox versions prior to 149, as well as Firefox ESR versions prior to 140.9.

Impact

Exploitation of this vulnerability causes undefined behavior, which can potentially be manipulated to execute arbitrary code.

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
1.9
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.