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Mozilla Firefox and Thunderbird Memory Safety Vulnerability Allowing Arbitrary Code Execution

Vulnerability

A vulnerability has been identified in Firefox and Thunderbird versions prior to 136, involving memory safety issues that could lead to memory corruption. With sufficient effort, these flaws might have been exploited to execute arbitrary code.

Impact

Exploitation of this vulnerability could have allowed for arbitrary code execution.

Remediation

Users can upgrade to Firefox 136 or Thunderbird 136 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.