Certain TP-Link devices allow Command Injection. This affects NC200 2.1.9 build 200225 NC210 1.0.9 build 200304 NC220 1.3.0 build 200304 NC230 1.3.0 build 200304 NC250 1.3.0 build 200304 NC260 1.5.2 build 200304 and NC450 1.5.3 build 200304.