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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 139, stemming from memory safety bugs that showed signs of memory corruption. These bugs could potentially be 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 139 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.