Address Bar Spoofing Vulnerability in Firefox by Mozilla
CVE-2025-11718

6.5MEDIUM

Key Information:

Vendor

Mozilla
Status
Firefox
Vendor
CVE Published:
14 October 2025

What is CVE-2025-11718?

A security vulnerability in Firefox allows a malicious webpage to exploit the visibilitychange event, creating a fake address bar when the actual address bar is hidden from view due to scrolling on Android devices. This deception can lead users to believe they are interacting with a legitimate URL, putting them at risk of phishing attacks and other malicious activities.

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Affected Version(s)

Firefox < 144

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1980808
https://www.mozilla.org/security/advisories/mfsa2025-81/

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Hafiizh
JSON
.