Vulnerability in Netgate pfSense CE

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

Netgate pfSense CE through 2.9.0 contains an OS command injection vulnerability that allows authenticated users to execute commands as root by supplying a crafted wireless parent interface name. Attackers with limited Wireless Edit or Interface Assignments privileges can submit values like ath0;<cmd> via interfaces_wireless_edit.php or interfaces_assign.php, which interface_wireless_clone() interpolates unescaped into an ifconfig shell command.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund15 Oct 2026WID-SEC-2026-3983

  Netgate pfSense: Multiple vulnerabilities Translated from German

  CVE-2026-111230CVE-2026-111225CVE-2026-111220+17 more CVEs

[ References ]References

• abraxaslabs.tech/research/pfsense-ce-leftoversIssue Tracking
• github.com/abraxas/pfsense-assign-if-addIssue Tracking
• github.com/abraxas/pfsense-wireless-cloneIssue Tracking
• github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/etc/inc/in…Product
• github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/…Product
• github.com/pfsense/pfsense/blob/9363ac5b8651a1c7a333180425ce7719070f95f9/src/usr/local/…Product
• www.vulncheck.com/advisories/netgate-pfsense-ce-through-2.9.0-os-command-injection-via-…Third Party Advisory