Main Vulnerability Database Vulnerabilities #VU106105

Input validation error in Mozilla Firefox and Firefox ESR - CVE-2025-2857

Published: March 27, 2025 / Updated: May 30, 2025

Vulnerability identifier: #VU106105

CSH Severity: High

CVSS v4: 8.6 [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]

CVE-ID: CVE-2025-2857

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

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).