CVE-2026-44194: OPNsense: RCE on user managment
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/syncuser.php. This vulnerability is fixed in 26.1.8.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-44194?
CVE-2026-44194 is considered critical due to its ability to allow authenticated users to execute arbitrary commands as root.
How do I fix CVE-2026-44194?
To mitigate CVE-2026-44194, upgrade OPNsense to version 26.1.8 or later.
Who is affected by CVE-2026-44194?
CVE-2026-44194 affects OPNsense users who have user-management privileges prior to version 26.1.8.
What type of vulnerability is CVE-2026-44194?
CVE-2026-44194 is a remote code execution (RCE) vulnerability in the OPNsense core system.
Can CVE-2026-44194 be exploited without authentication?
No, CVE-2026-44194 requires the attacker to have authenticated access with user-management privileges.