CVE-2025-55031

Severity CVSS v4.0:

Pending analysis

Type:

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

Publication date:

19/08/2025

Last modified:

13/04/2026

Description

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&#39;s computer into the target account. This vulnerability was fixed in Firefox for iOS 142 and Focus for iOS 142.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mozilla:firefox::::::iphone_os::*		142.0 (excluding)
cpe:2.3:a:mozilla:firefox_focus::::::iphone_os::*		142.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-55031

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools