Medium severity6.6NVD Advisory· Published Oct 15, 2026· Updated Oct 15, 2026
CVE-2026-111221
CVE-2026-111221
Description
Netgate pfSense CE through 2.9.0 contains a configuration injection vulnerability that allows authenticated WebGUI users to inject mpd5 commands by submitting an unescaped RADIUS shared secret. Attackers with L2TP or PPPoE Server edit privileges can POST a secret containing a quote and newline to vpn_l2tp.php or services_pppoe_edit.php, appending an up-script that executes as root when a session starts.
Affected products
2- Range: <=2.9.0
Patches
Vulnerability mechanics
References
5- abraxaslabs.tech/research/pfsense-ce-leftoversnvd
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/vpn.incnvd
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/vpn.incnvd
- github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/vpn_l2tp.phpnvd
- www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-command-injection-via-radius-secret-mpd-conf-injectionnvd
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