CVE-2026-111221

Netgate pfSense CE through 2.9.0 Command Injection via RADIUS Secret mpd.conf Injection

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

Netgate · pfSense CE

CVSS v4.0 VULNCHECK

7.5 HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

6.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.95% chance of exploitation in the next 30 days, 61st percentile

Published

2026-10-15

Proof-of-concept exploits (1)

• abraxas/pfsense-l2tp-radius-mpd

References

• CVE Record
• NVD entry