Spoofing attack in Firefox for Android and Mozilla Firefox - CVE-2025-10534
Published: September 17, 2025
Vulnerability identifier: #VU115736
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-10534
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data in the Site Permissions component. A remote attacker can perform a spoofing attack.
Affected software
Firefox for Android
Mozilla Firefox
Anolis OS
Mozilla Thunderbird
firefox
Mozilla Firefox
Anolis OS
Mozilla Thunderbird
firefox
How to mitigate CVE-2025-10534
Install updates from vendor's website.
Firefox for Android - update to 143.0
Mozilla Firefox - update to 143.0
Mozilla Thunderbird - update to 143.0
firefox - update to 140.3.0-1
Mozilla Firefox - update to 143.0
Mozilla Thunderbird - update to 143.0
firefox - update to 140.3.0-1