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Mozilla Firefox IPC Component Use-After-Free Vulnerability

Vulnerability

A use-after-free vulnerability has been identified in the Inter-Process Communication (IPC) component of Mozilla Firefox. This issue affects Firefox versions prior to 147, as well as Firefox Extended Support Release (ESR) versions prior to 115.32 and prior to 140.7.

Impact

Exploitation of this vulnerability leads to a use-after-free condition, which can commonly result in memory corruption and potentially allow for arbitrary code execution.

Remediation

Users can upgrade to Firefox 147 or Firefox ESR 115.32 or 140.7 to address this vulnerability.

Added: Jan 13, 2026, 2:32 PM
Updated: Jan 13, 2026, 9:32 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
10.0
exploitability
4.4
remediation
7.7
relevance
2.0
threat
0.0
urgency
2.9
incentive
0.8

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.