Insufficient UI Warning of Dangerous Operations in Firefox ESR and Mozilla Firefox - CVE-2025-6426
Published: June 24, 2025
Vulnerability identifier: #VU111887
CSH Severity: High
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:Amber
CVE-ID: CVE-2025-6426
CWE-ID: CWE-357
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Firefox ESR
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Detailed vulnerability description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to the terminal extension does not show a warning when opening an executable terminal filer on macOS. A remote attacker can trick the victim into executing an executable file and compromise the affected system.
Note, the vulnerability affects macOS installations only.
How to mitigate CVE-2025-6426
Install updates from vendor's website.