MFSA2025-42: Security Vulnerabilities fixed in Firefox 139
Published May 27, 2025
·Updated
Security Vulnerabilities fixed in Firefox 139
Affected Software
1 affected componentFixes available
Mozilla Firefox<139
139
Event History
May 27, 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 is the severity of MFSA2025-42?
The severity of MFSA2025-42 is classified as high due to potential exploitation risks.
2
How do I fix MFSA2025-42?
To fix MFSA2025-42, upgrade Firefox to version 139 or later.
3
What vulnerabilities are addressed by MFSA2025-42?
MFSA2025-42 addresses multiple security vulnerabilities affecting earlier versions of Firefox.
4
Who is affected by MFSA2025-42?
Users of Firefox versions prior to 139 are affected by MFSA2025-42.
5
Is there a workaround for MFSA2025-42?
There are no recommended workarounds for MFSA2025-42, upgrading is advised.