Softwin WMX3 ImageAdd.ashx ImageAdd unrestricted upload

A vulnerability, which was classified as critical, has been found in Softwin WMX3 3.1. This issue affects the function ImageAdd of the file /ImageAdd.ashx. The manipulation of the argument File leads to unrestricted upload. The attack may be initiated 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.