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Mozilla Firefox and Thunderbird Uninitialized Memory Vulnerability in the Graphics: Text Component

Vulnerability

A vulnerability exists in the Graphics: Text component of Mozilla Firefox and Thunderbird, specifically in versions prior to 148. This issue stems from uninitialized memory, which can lead to potential memory safety problems.

Impact

Exploitation of this vulnerability could result in memory corruption, with the possibility of being leveraged to execute arbitrary code.

Remediation

Users can upgrade to Firefox or Thunderbird version 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
4.2
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.