Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-44194

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execution (RCE) vulnerability in the OPNsense core allows a user with user-management privileges to execute arbitrary system commands as root. An attacker can bypass input validation by formatting their malicious payload as a compliant email address, allowing shell commands to reach the underlying operating system. The flaw exists in the local user synchronization flow, within core/src/opnsense/scripts/auth/sync_user.php. This vulnerability is fixed in 26.1.8.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 45.1%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-44194


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