Input validation error in Firefox for Android and Mozilla Firefox - CVE-2025-4089
Published: April 29, 2025
Vulnerability identifier: #VU108054
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-4089
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient escaping of special characters in the "copy as cURL" feature. A remote attacker can trick the victim into copying a specially crafted URL and execute arbitrary code on the system.
Affected software
Firefox for Android
Mozilla Firefox
Ubuntu
Mozilla Thunderbird
thunderbird (Ubuntu package)
Mozilla Firefox
Ubuntu
Mozilla Thunderbird
thunderbird (Ubuntu package)
How to mitigate CVE-2025-4089
Install updates from vendor's website.
Firefox for Android - update to 138.0
Mozilla Firefox - update to 138.0
Mozilla Thunderbird - update to 138.0
thunderbird (Ubuntu package) - update to 1:140.7.1+build1-0ubuntu0.22.04.1
Mozilla Firefox - update to 138.0
Mozilla Thunderbird - update to 138.0
thunderbird (Ubuntu package) - update to 1:140.7.1+build1-0ubuntu0.22.04.1