This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.
The specific flaw exists within DATACORE.exe. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator.
This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline.
12/17/19 - ZDI reported the vulnerability to ICS-CERT