This improper access control vulnerability in Helpdesk allows attackers to access the system logs. To fix the vulnerability, QNAP recommend updating QTS and Helpdesk to their latest versions.
Cross-site scripting vulnerability in QTS 4.2.6 build 20180711, QTS 4.3.3: Qsync Central 3.0.2, QTS 4.3.4: Qsync Central 3.0.3, QTS 4.3.5: Qsync Central 3.0.4 and earlier versions could allow remote attackers to inject Javascript code in the compromised application.
Command Injection vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to run arbitrary commands on the NAS.
NULL Pointer Dereference vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to crash the NAS media server.
Improper Authorization vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to power off the NAS.
Buffer Overflow vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could have unspecified impact on the NAS.