CVE-2026-111218
Netgate pfSense CE 2.7.0 through 2.9.0 OS Command Injection via Traffic Shaper Limiters
- State
- Published
- Severity
- 8.6 High
- Published
- Oct 15, 2026
- Updated
- Oct 15, 2026
- Reserved
- Oct 15, 2026
Description
Netgate pfSense CE 2.7.0 through 2.9.0 contains an OS command injection vulnerability that allows authenticated users with Traffic Shaper Limiters privileges to execute root commands by tampering with the limiter number field. Attackers can submit a malicious hidden 'number' value when editing a limiter, then delete it so delete_queue() passes the unquoted value to dnctl via /bin/sh as root.
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-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
pfSense CENetgate |
|
References
- https://github.com/abraxas/pfsense-limiter-numberexploittechnical-description
- https://abraxaslabs.tech/research/pfsense-ce-leftoverstechnical-description
- https://abraxaslabs.tech/research/pfsense-limiter-numbertechnical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/shaper.inc#L3959technical-description
- https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/shaper.inc#L3820-L3821technical-description
- VulnCheck Advisory: Netgate pfSense CE 2.7.0 through 2.9.0 OS Command Injection via Traffic Shaper Limitersthird-party-advisory
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