MFSA2025-94: Security Vulnerabilities fixed in Firefox ESR 140.6
Published Dec 9, 2025
·Updated
Security Vulnerabilities fixed in Firefox ESR 140.6
Affected Software
1 affected componentFixes available
Mozilla Firefox ESR<140.6
140.6
Event History
Dec 9, 2025
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
1
What security vulnerabilities are addressed in MFSA2025-94?
MFSA2025-94 addresses multiple security vulnerabilities in Firefox ESR 140.6.
2
What versions of Firefox are affected by MFSA2025-94?
Firefox ESR versions prior to 140.6 are affected by MFSA2025-94.
3
How do I fix the vulnerabilities described in MFSA2025-94?
To fix the vulnerabilities in MFSA2025-94, upgrade to Firefox ESR version 140.6 or later.
4
Is there a risk associated with not updating from Firefox ESR 140.6?
Yes, not updating may leave your system vulnerable to exploitation of the fixed security issues in MFSA2025-94.
5
Who is the vendor responsible for addressing MFSA2025-94?
The vendor responsible for addressing MFSA2025-94 is Mozilla.