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Mozilla Firefox and Thunderbird Invalid Pointer Vulnerability in the DOM Component

Vulnerability

A vulnerability has been identified in the DOM: Core & HTML component of Mozilla Firefox and Thunderbird. This issue involves an invalid pointer, which could potentially be exploited under certain conditions. The vulnerability affects Firefox and Thunderbird versions prior to 148.

Impact

Exploitation of this vulnerability could lead to memory safety issues, with evidence suggesting that such memory corruption could be manipulated to execute arbitrary code.

Remediation

Users can upgrade to Firefox 148 or Thunderbird 148 to address this vulnerability.

Added: Feb 24, 2026, 2:26 PM
Updated: Feb 24, 2026, 10:30 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
0.6
exploitability
4.4
remediation
7.7
relevance
3.1
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.