Input validation error in Firefox ESR - CVE-2025-4084
Published: April 29, 2025
Vulnerability identifier: #VU108047
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2025-4084
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Firefox ESR
Firefox ESR
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient insufficient escaping of the ampersand character in the "copy as cURL" feature. A remote attacker can trick the victim into copying a specially crafted URL and execute arbitrary commands on the system.
Note, the vulnerability affects Windows installations only.
How to mitigate CVE-2025-4084
Install updates from vendor's website.