Vulnerabilities

pfSense CE 2.4.5 through 2.9.0 contains an OS command injection vulnerability that allows authenticated WebGUI users with Advanced Admin Access…

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.

Read at NIST National Vulnerability Database (CVE API 2.0)

Product

pfSense / OPNsense

CVSS

7.2

EPSS

0.065 (p94)

Exposure class

Edge / VPN / firewall

• NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
• CVE-2026-111226 on this site · NVD · CVE.org · Vulnpedia

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