Optergy Proton/Enterprise devices allow Authenticated File Upload with Code Execution as root.
https://www.applied-risk.com/resources/ar-2019-008
https://applied-risk.com/labs/advisories
http://www.securityfocus.com/bid/108686
http://packetstormsecurity.com/files/155269/Optergy-2.3.0a-Remote-Root.html