CVE-2026-111221
MEDIUMCVSS 6.6Description
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.
Timeline
Published:October 15th, 2026 7:17 PM
Last modified:October 15th, 2026 9:05 PM
CVSS Scoring
CVSS v3: 6.6 (MEDIUM)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://abraxaslabs.tech/research/pfsense-ce-leftovers
- https://github.com/abraxas/pfsense-l2tp-radius-mpd
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/vpn.inc#L202-L215
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/vpn.inc#L428-L441
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/vpn_l2tp.php#L137-L143
- https://www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-command-injection-via-radius-secret-mpd-conf-injection
Source: NIST NVD · Data may lag official sources by up to one minute