An OS command injection vulnerability exists in multiple Raidsonic NAS devices—specifically tested on IB-NAS5220 and IB-NAS4220—via the unauthenticated timeHandler.cgi endpoint exposed through the web interface.
RaidSonic NAS-4220-B with 2.6.0-n(2007-10-11) firmware stores a partition encryption key in an unencrypted /system/.crypt file with base64 encoding, which allows local users to obtain the key.