JUUKO K-800 (Firmware versions prior to numbers ending ...9A, ...9B, ...9C, etc.) is vulnerable to a replay attack and command forgery, which could allow attackers to replay commands, control the device, view commands, or cause the device to stop running.

In JUUKO K-808, an attacker could specially craft a packet that encodes an arbitrary command, which could be executed on the K-808 (Firmware versions prior to numbers ending ...9A, ...9B, ...9C, etc.).