Arbitrary Website Access Vulnerability in Firefox for iOS
CVE-2025-54145

9.1CRITICAL

Key Information:

Vendor

Mozilla
Status
Firefox For iOS
Vendor
CVE Published:
19 August 2025

What is CVE-2025-54145?

A vulnerability exists in Firefox for iOS versions earlier than 141 that may allow an attacker to exploit the QR scanner feature. If a user is deceived into scanning a malicious QR code, it could result in arbitrary websites being loaded through the Firefox open-text URL scheme. This poses a risk of directing users to potentially harmful sites without their consent.

Affected Version(s)

Firefox for iOS < 141

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1946122
https://www.mozilla.org/security/advisories/mfsa2025-60/

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

James Lee
.
CVE-2025-54145 : Arbitrary Website Access Vulnerability in Firefox for iOS