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Mozilla Firefox and Firefox ESR WebRTC Component Use-After-Free Vulnerability

Vulnerability

A use-after-free vulnerability has been identified in the WebRTC component of Mozilla Firefox. This issue allows for memory corruption, which could potentially be exploited to execute arbitrary code. The vulnerability is present in Firefox versions prior to 150 and in Firefox ESR versions prior to 140.10.

Impact

Exploitation of this vulnerability could lead to memory corruption and potentially allow for arbitrary code execution.

Remediation

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

Added: Apr 21, 2026, 3:12 PM
Updated: Apr 21, 2026, 3:12 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
0.6
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.