Mozilla Foundation Security Advisory 2026-124

Security Vulnerabilities fixed in Firefox for iOS 160.0

Announced

November 9, 2026

Impact

high

Products

Firefox for iOS

Fixed in

Firefox for iOS 160

#CVE-2026-121842: Privilege escalation in the Reader View component in Firefox for iOS

Reporter: navapon
Impact: high

References

Bug 2076233

#CVE-2026-121843: Privilege escalation in Firefox for iOS

Reporter: Hoang Quan
Impact: high

References

Bug 2083030

#CVE-2026-121841: Other issue in Firefox for iOS

Reporter: Hoang Quan & tu3n.4nh
Impact: moderate

References

Bug 2081874