A vulnerability has been found in Vaelsys 4.1.0 and classified as problematic. This vulnerability affects unknown code of the file /grid/vgrid_server.php of the component MD4 Hash Handler. The manipulation of the argument xajaxargs leads to use of weak hash. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. 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.