All vulnerabilities
CVE-2026-111226

Netgate pfSense CE 2.4.5 through 2.9.0 OS Command Injection via system_advanced_admin.php

Netgate pfSense CE
Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)6.55%Chance of exploitation activity in the next 30 days, higher than 93% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published15 Oct 2026Updated 15 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

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.

Text from CVE List

Affected versions 1

  • pfSense CEaffected: 2.4.5 through 2.9.0CVE List

References 5