relay_cgi.cgi on Dingtian DT-R002 2CH relay devices with firmware 3.1.276A allows an attacker to replay HTTP post requests without the need for authentication or a valid signed/authorized request.
https://www.trustwave.com/en-us/resources/security-resources/security-advisories/
http://packetstormsecurity.com/files/167868/Dingtian-DT-R002-3.1.276A-Authentication-Bypass.html