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.
Published: 2026-10-15
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories

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History

Mon, 26 Oct 2026 17:30:00 +0100

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 17:45:00 +0200

Type Values Removed Values Added
First Time appeared Pfsense
Pfsense pfsense
CPEs cpe:2.3:a:pfsense:pfsense:*:*:*:*:community:*:*:*
Vendors & Products Pfsense
Pfsense pfsense

Thu, 15 Oct 2026 21:00:00 +0200

Type Values Removed Values Added
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.
Title Netgate pfSense CE through 2.9.0 Command Injection via RADIUS Secret mpd.conf Injection
First Time appeared Netgate
Netgate pfsense
Weaknesses CWE-93
CPEs cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*
Vendors & Products Netgate
Netgate pfsense
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-26T15:08:34.818Z

Reserved: 2026-10-15T18:21:20.429Z

Link: CVE-2026-111221

cve-icon Vulnrichment

Updated: 2026-10-26T15:08:28.863Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-15T19:17:34.650

Modified: 2026-10-26T16:17:13.390

Link: CVE-2026-111221

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-17T18:45:11Z

Weaknesses
  • CWE-93

    Improper Neutralization of CRLF Sequences ('CRLF Injection')