A vulnerability exists whereby an unauthenticated user can inject commands as root on the device. (Ref #30088) This vulnerability can result in arbitrary command execution, and can result in total compromise of the device. This issue affects PAN-OS 4.0.3 and earlier; PAN-OS 3.1.9 and earlier.
Work around: This issue affects the management interface of the device. Security appliance management best practices dictate that the management interface be isolated and strictly limited only to security administration personnel.