Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck

CVE-2026-111216Netgate pfSense CE through 2.9.0 OS Command Injection via Gateway Monitor IP

High 7.2

In plain English

A high-severity OS command injection in pfSense CE from Netgate. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 4.7% (higher than 92% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)4.7%top 8.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Netgate pfSense CE through 2.9.0 contains an OS command injection vulnerability that allows authenticated users with gateway edit privileges to execute commands as root by injecting shell metacharacters into an IPv6 link-local zone index. Attackers can set a gateway Monitor IP whose unvalidated zone carries a payload, which start_dpinger() passes unescaped to the dpinger shell command when monitoring is applied.

Affected products (as reported)

Vendor	Product	Versions
Netgate	pfSense CE	0 – through 2.9.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/abraxas/pfsense-gw-ipv6-zone exploit, technical-description
https://abraxaslabs.tech/research/pfsense-ce-leftovers technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/util.inc#L1418 technical-description
https://github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/gwlb.inc#L535 technical-description
VulnCheck Advisory: Netgate pfSense CE through 2.9.0 OS Command Injection via Gateway Monitor IP third-party-advisory