CVE-2025-55031: Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An attacker within Bluetooth range could have…

PriorityP351critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

0.39%

30.9th percentile

Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An attacker within Bluetooth range could have used this to trick the user into using their passkey to log the attacker's computer into the target account. This vulnerability was fixed in Firefox for iOS 142 and Focus for iOS 142.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
mozilla	firefox	< 142.0	142.0
mozilla	firefox	—	—
mozilla	firefox_focus	< 142.0	142.0

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