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Mozilla Firefox and Thunderbird Incorrect Boundary Conditions Vulnerability in Audio/Video: GMP Component

Vulnerability

A vulnerability exists in the Audio/Video: GMP component of Mozilla Firefox and Thunderbird. It arises from incorrect boundary conditions, which could potentially be exploited. This issue affects multiple versions of Firefox and Thunderbird, with specific version details outlined in the advisory.

Impact

Exploitation of this vulnerability could lead to a sandbox escape, allowing malicious content to bypass security restrictions and potentially execute harmful actions in the user's environment.

Remediation

Users can upgrade to Firefox 148, Firefox ESR 140.8, or Thunderbird 148 to address this vulnerability.

Added: Feb 24, 2026, 2:40 PM
Updated: Feb 24, 2026, 10:41 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
1.9
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.