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Mozilla Firefox and Thunderbird Memory Safety Vulnerability Allowing Arbitrary Code Execution

Vulnerability

A vulnerability exists in Firefox versions prior to 145 and Thunderbird versions prior to 145, related to memory safety. Some of these memory safety issues indicated potential memory corruption, which could have been exploited to execute arbitrary code with sufficient effort.

Impact

Exploitation of this vulnerability could lead to arbitrary code execution.

Remediation

Users can upgrade to Firefox 145 or Thunderbird 145 to address this vulnerability.

Added: Nov 11, 2025, 4:19 PM
Updated: Nov 11, 2025, 4:19 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
10.0
exploitability
4.4
remediation
7.7
relevance
1.0
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.