CVE Catalog

CVE-2026-111226

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Very high risk
6.55%

94th percentile - higher than 94% of all known CVEs

Summary

pfSense CE 2.4.5 through 2.9.0 contains an OS command injection vulnerability that allows authenticated WebGUI users with Advanced Admin Access privilege to execute commands as root via Login Protection settings. Attackers can submit sshguard threshold, block time, or detection time values containing newlines or $(...) that are written unvalidated to sshguard.conf and sourced as root on restart.

Risk Assessment

A user with Advanced Admin Access privilege can execute arbitrary commands as root, taking over the device.

Recommendation

Update pfSense CE to the patched version and restrict the Advanced Admin Access privilege to trusted administrators.

Other vulnerabilities in pfSense CE

See all
Original NVD description (English source)

pfSense CE 2.4.5 through 2.9.0 contains an OS command injection vulnerability that allows authenticated WebGUI users with Advanced Admin Access privilege to execute commands as root via Login Protection settings. Attackers can submit sshguard threshold, block time, or detection time values containing newlines or $(...) that are written unvalidated to sshguard.conf and sourced as root on restart.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS