Mozilla Firefox up to 143 on Android Address Bar clickjacking

Summaryinfo

A vulnerability has been found in Mozilla Firefox up to 143 on Android and classified as problematic. The impacted element is an unknown function of the component Address Bar. The manipulation leads to clickjacking. This vulnerability is uniquely identified as CVE-2025-11718. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 143 on Android. It has been rated as problematic. This issue affects an unknown part of the component Address Bar. The manipulation with an unknown input leads to a clickjacking vulnerability. Using CWE to declare the problem leads to CWE-451. The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks. Impacted is integrity. The summary by CVE is:

When the address bar was hidden due to scrolling on Android, a malicious page could create a fake address bar to fool the user in response to a visibilitychange event This vulnerability affects Firefox < 144.

It is possible to read the advisory at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2025-11718 since 10/13/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/16/2025). The attack technique deployed by this issue is T1566.003 according to MITRE ATT&CK.

Upgrading to version 144 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-2275). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• RESF Rocky Linux
• IGEL OS
• Mozilla Firefox
• Mozilla Firefox ESR
• Mozilla Thunderbird

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 143

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

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Be aware that VulDB is the high quality source for vulnerability data.

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