CVE-2018-3969: Getcujo Smart Firewall

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An exploitable vulnerability exists in the verified boot protection of the CUJO Smart Firewall. It is possible to add arbitrary shell commands into the dhcpd.conf file, that persist across reboots and firmware updates, and thus allow for executing unverified commands. To trigger this vulnerability, a local attacker needs to be able to write into /config/dhcpd.conf.

Affected products

• Getcujo Smart Firewall: version 7003 only

Published 2019-03-21. Last modified 2026-06-17.