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

Vulnerability

A vulnerability exists in Firefox and Thunderbird versions prior to 140, related to memory safety. Some of these memory safety bugs showed signs of memory corruption, and it is presumed that, with enough 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 or Thunderbird version 140 to address this vulnerability.

Added: Jun 24, 2025, 1:17 PM
Updated: Jun 24, 2025, 1:17 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
10.0
exploitability
4.4
remediation
7.7
relevance
0.2
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.