The FTP service in QNAP iArtist Lite before 1.4.54, as distributed with QNAP Signage Station before 2.0.1, has hardcoded credentials, which makes it easier for remote attackers to obtain access via a session on TCP port 21.

QNAP iArtist Lite before 1.4.54, as distributed with QNAP Signage Station before 2.0.1, allows remote authenticated users to gain privileges by registering an executable file, and then waiting for this file to be run in a privileged context after a reboot.