Volerion logoVolerion
Volerion logoVolerion

Mozilla Firefox and Thunderbird Memory Safety Vulnerability Allowing Potential Arbitrary Code Execution

Vulnerability

A memory safety vulnerability has been identified in Mozilla Firefox versions prior to 146 and Thunderbird versions prior to 146. Some of these memory safety bugs showed signs of memory corruption, and it is presumed that with sufficient effort, they could have been exploited to execute arbitrary code.

Impact

Exploitation of this vulnerability could lead to arbitrary code execution.

Remediation

Users can upgrade to Firefox 146 or Thunderbird 146 to address this vulnerability.

Added: Dec 9, 2025, 8:34 PM
Updated: Dec 9, 2025, 8:34 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
10.0
exploitability
4.4
remediation
7.7
relevance
1.3
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.