high7.2
CVE-2026-111226
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 ex…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| PfSense CE 2.4.5 | through 2.9.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://abraxaslabs.tech/research/pfsense-ce-leftovers
- https://github.com/abraxas/pfsense-sshguard-crlf
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/syslog.inc#L531-L563
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/pfSense/include/www/system_advanced_admin.inc#L355-L381
- https://www.vulncheck.com/advisories/netgate-pfsense-ce-2.4.5-through-2.9.0-os-command-injection-via-system-advanced-admin-php