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Mozilla Firefox and Firefox ESR Incorrect Boundary Conditions Vulnerability in Web Codecs Component

Vulnerability

A vulnerability exists in the Audio/Video: Web Codecs component of Mozilla Firefox. It affects Firefox versions prior to 149 and Firefox ESR versions prior to 140.9. The vulnerability arises from incorrect boundary conditions, which can lead to potential exploitation.

Impact

Exploitation of this vulnerability could result in a sandbox escape, allowing malicious content to interact with the underlying system or application in an unauthorized manner.

Remediation

Users can upgrade to Firefox 149 or Firefox ESR 140.9 to address this vulnerability.

Added: Mar 24, 2026, 1:50 PM
Updated: Mar 24, 2026, 1:50 PM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
1.9
exploitability
4.4
remediation
7.7
relevance
4.6
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.