CVE-2026-111220
Netgate pfSense CE through 2.9.0 Crontab Injection via PPP Periodic Reset ptpid
- State
- Published
- Severity
- 8.6 High
- Published
- Oct 15, 2026
- Updated
- Oct 15, 2026
- Reserved
- Oct 15, 2026
Description
pfSense CE through 2.9.0 contains a crontab injection vulnerability in interfaces_ppps_edit.php that allows authenticated users to execute commands as root by injecting newlines into the ptpid or reset hour/minute fields. Attackers holding the 'WebCfg - Interfaces: PPPs: Edit' privilege can submit crafted POST values that configure_cron() writes unescaped into /etc/crontab, running arbitrary root commands on schedule.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
Affected Products
| Product | Versions |
|---|---|
pfSense CENetgate |
|
References
- https://github.com/abraxas/pfsense-pppoe-cronexploittechnical-description
- https://abraxaslabs.tech/research/pfsense-ce-leftoverstechnical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/interfaces.inc#L2174-L2214technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/www/interfaces_ppps_edit.php#L271-L278technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/services.inc#L5652-L5660technical-description
- VulnCheck Advisory: Netgate pfSense CE through 2.9.0 Crontab Injection via PPP Periodic Reset ptpidthird-party-advisory
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