In the medialibrary component in QNAP NAS 4.3.3.0229, an un-authenticated, remote attacker can execute arbitrary system commands as the root user of the NAS application.
https://www.qnap.com/en/support/con_show.php?cid=128
https://www.lateralsecurity.com/downloads/Lateral_Security-Advisory-QNAP_QTS_CVE-2017-10700.pdf