Advantech WebAccess NMS TFTP Unrestricted File Upload Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute code on vulnerable installations of Advantech WebAccess NMS. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the TFTP service. The issue results from the lack of proper validation of user-supplied data, which can allow for the upload of arbitrary files. An attacker can leverage this vulnerability to execute code under the context of SYSTEM.