#VU106105 Input validation error in Mozilla Firefox and Firefox ESR - CVE-2025-2857
Published: March 27, 2025 / Updated: May 30, 2025
Vulnerability identifier: #VU106105
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2025-2857
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Mozilla Firefox
Firefox ESR
Mozilla Firefox
Firefox ESR
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input within the IPC code. A remote attacker can trick the victim into visiting a specially crafted website, bypass sandbox restrictions and execute arbitrary code on the system.
Note, the vulnerability is similar to #VU106029 (CVE-2025-2783).
Remediation
Install updates from vendor's website.