MFSA2026-09: Security Vulnerabilities fixed in Firefox for iOS 147.2.1
Published Feb 9, 2026
·Updated
Security Vulnerabilities fixed in Firefox for iOS 147.2.1
Affected Software
2 affected components
All of the following
Mozilla Firefox=147.2.1
Apple iOS
Event History
Feb 9, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of MFSA2026-09?
MFSA2026-09 addresses critical security vulnerabilities in Firefox for iOS version 147.2.1.
2
How do I fix MFSA2026-09?
To fix MFSA2026-09, update your Firefox for iOS to version 147.2.1 or later.
3
What types of vulnerabilities are addressed in MFSA2026-09?
MFSA2026-09 includes multiple vulnerabilities related to memory safety and security flaws.
4
Who is affected by MFSA2026-09?
Users of Firefox for iOS version 147.2.1 on Apple iOS devices are affected by MFSA2026-09.
5
When was MFSA2026-09 released?
MFSA2026-09 was released alongside the security update for Firefox for iOS on October 3, 2023.