Upgrade to version 4.1.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.
Vendor Specific Advisory URL
Other Advisory URL: http://www.westpoint.ltd.uk/advisories/wp-02-0011.txt
Keyword: Directory Traversal
ISS X-Force ID: 10246
Bugtraq ID: 5852