Privilege Escalation in Firefox for iOS by Mozilla

CVE-2026-121843

What is CVE-2026-121843?

A privilege escalation vulnerability exists in Firefox for iOS that may allow unauthorized users to gain elevated access to critical functionalities. This issue could potentially lead to unauthorized actions within the app, compromising user data and overall application security. Mozilla has addressed this vulnerability in the recently released Firefox for iOS version 160.0, which mitigates the risks associated with this flaw. Users are strongly advised to update to the latest version to ensure their applications remain secure.

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