Missing authentication for critical function vulnerability in UNIMO Technology digital video recorders (UDR-JA1004/JA1008/JA1016 firmware versions v1.0.20.13 and earlier, and UDR-JA1016 firmware versions v2.0.20.13 and earlier) allows a remote unauthenticated attacker to execute an arbitrary OS command by sending a specially crafted request to the affected device web interface.
https://jvn.jp/en/vu/JVNVU90821877/index.html
http://www.unimo.co.jp/table_notice/index.php?act=1&resid=1643590226-637355