Digiwin ERP FileUploadApi.ashx DoWebUpload unrestricted upload

A vulnerability classified as critical has been found in Digiwin ERP 5.1. Affected is the function DoUpload/DoWebUpload of the file /Api/FileUploadApi.ashx. The manipulation of the argument File leads to unrestricted upload. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.