JD Cloud BE6500 jdcapi sub_4780 command injection

A vulnerability has been found in JD Cloud BE6500 4.4.1.r4308. This issue affects the function sub_4780 of the file /jdcapi. Such manipulation of the argument ddns_name leads to command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.