Advantech WebAccess 8.3.1 and earlier has several stack-based buffer overflow vulnerabilities that have been identified, which may allow an attacker to execute arbitrary code.

Advantech WebAccess 8.3.1 and earlier has a .dll component that is susceptible to external control of file name or path vulnerability, which may allow an arbitrary file deletion when processing.

Advantech WebAccess 8.3.1 and 8.3.2 are vulnerable to cross-site scripting in the Bwmainleft.asp page. An attacker could leverage this vulnerability to disclose credentials amongst other things.

Advantech WebAccess 8.3.1 and earlier has a path traversal vulnerability which may allow an attacker to execute arbitrary code.

WADashboard API in Advantech WebAccess 8.3.1 and 8.3.2 allows remote authenticated attackers to write or overwrite any file on the filesystem due to a directory traversal vulnerability in the writeFile API. An attacker can use this vulnerability to remotely execute arbitrary code.