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CVE-2025-55031

CRITICAL

9.8

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's computer into the target account. This vulnerability was fixed in Firefox for iOS 142 and Focus for iOS 142.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published8/19/2025

Last Modified4/13/2026

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefoxmozilla:firefox_focus

Weaknesses (CWE)

CWE-601

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1979499(security@mozilla.org)

https://bugzilla.mozilla.org/show_bug.cgi?id=1979804(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-68/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-69/(security@mozilla.org)

IOC Correlations

No correlations recorded

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