QNAP VioStor NVR devices with firmware 4.0.3, and the Surveillance Station Pro component in QNAP NAS, have a hardcoded guest account, which allows remote attackers to obtain web-server login access via unspecified vectors.

cgi-bin/pingping.cgi on QNAP VioStor NVR devices with firmware 4.0.3, and in the Surveillance Station Pro component in QNAP NAS, allows remote authenticated users to execute arbitrary commands by leveraging guest access and placing shell metacharacters in the query string.