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Mozilla Firefox and Thunderbird Memory Safety Vulnerability Allowing Arbitrary Code Execution

Vulnerability

A vulnerability exists in Mozilla Firefox and Thunderbird due to memory safety issues. These bugs, present in Firefox and Thunderbird versions prior to 138, showed signs of memory corruption, which could potentially be exploited to execute arbitrary code.

Impact

Exploitation of this vulnerability could lead to arbitrary code execution on the user's system.

Remediation

Users can upgrade to Firefox 138 or Thunderbird 138 to address this vulnerability.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
10.0
exploitability
4.4
remediation
7.7
relevance
0.0
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.