MFSA2026-89: Security Vulnerabilities fixed in Firefox for iOS 155.1

Published Sep 8, 2026

Updated

Security Vulnerabilities fixed in Firefox for iOS 155.1

Affected Software

2 affected components

All of the following

Mozilla Firefox=155.1

Apple iOS

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Firefox for iOS to a version that resolves this vulnerability.
Fixed in 155.1

Event History

Sep 8, 2026

Advisory Published

via Mozilla·12:00 AM

Data Sourced

via Mozilla·12:00 AM

DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

CVE-2026-86853

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.