Unintended Proxy or Intermediary in Mozilla Firefox and Firefox ESR - CVE-2025-0237
Published: January 7, 2025
Vulnerability identifier: #VU102424
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-0237
CWE-ID: CWE-441
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to WebChannel API does not check the sending principal but rather accepted the principal being sent when transporting data across processes. A local user can perform confused deputy attack and escalate privileges on the system.
How to mitigate CVE-2025-0237
Install updates from vendor's website.