Command injection vulnerability in Helpdesk versions 1.1.21 and earlier in QNAP QTS 4.2.6 build 20180531, QTS 4.3.3 build 20180528, QTS 4.3.4 build 20180528 and their earlier versions could allow remote attackers to run arbitrary commands in the compromised application.

Command injection vulnerability in LDAP Server in QNAP QTS 4.2.6 build 20171208, QTS 4.3.3 build 20180402, QTS 4.3.4 build 20180413 and their earlier versions could allow remote attackers to run arbitrary commands or install malware on the NAS.

Cross-site scripting (XSS) vulnerability in App Center in QNAP QTS 4.2.6 build 20171208, QTS 4.3.3 build 20171213, QTS 4.3.4 build 20171223, and their earlier versions could allow remote attackers to inject Javascript code.

Cross-site scripting (XSS) vulnerability in File Station of QNAP QTS 4.2.6 build 20171026, QTS 4.3.3 build 20170727 and earlier allows remote attackers to inject arbitrary web script or HTML.

Cross-site scripting (XSS) vulnerability in the share link function of File Station of QNAP 4.2.6 build 20171026, QTS 4.3.3 build 20170727 and earlier allows remote attackers to inject arbitrary web script or HTML.

QNAP QTS 4.2.6 build 20171026, QTS 4.3.3 build 20170727 and earlier allows remote attackers to obtain potentially sensitive information (firmware version and running services) via a request to sysinfoReq.cgi.

QNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier does not utilize CSRF protections.

QNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier allows remote attackers to run arbitrary OS commands against the system with root privileges.

QNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier does not authenticate requests properly. Successful exploitation could lead to change of the Media Streaming settings, and leakage of sensitive information of the QNAP NAS.

Cross-site scripting (XSS) vulnerability in QNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier allows remote attackers to inject arbitrary web script or HTML. The injected code will only be triggered by a crafted link, not the normal page.

A buffer overflow vulnerability in password function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

A buffer overflow vulnerability in password function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

A buffer overflow vulnerability in password function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

A buffer overflow vulnerability in login function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

A buffer overflow vulnerability in login function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

A buffer overflow vulnerability in external device function in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

QNAP has already patched this vulnerability. This security concern allows a remote attacker to run arbitrary commands on the QNAP Video Station 5.1.3 (for QTS 4.3.3), 5.2.0 (for QTS 4.3.4), and earlier.

QNAP has patched a remote code execution vulnerability affecting the QTS Media Library in all versions prior to QTS 4.2.6 build 20170905 and QTS 4.3.3.0299 build 20170901. This particular vulnerability allows a remote attacker to execute commands on a QNAP NAS using a transcoding service on port 9251. A remote user does not require any privileges to successfully execute an attack.