http://blogs.technet.com/tristank/archive/2009/05/19/iis-webdav-security-advisory.aspxToday, an IIS 5.0 to 6.0 security advisory was released: Vulnerability in Internet Information Services Could Allow Elevation of Privilege http://www.microsoft.com/technet/security/advisory/971492.mspx If you’re using WebDAV on any version prior to 7.0en-AUCommunityServer 2.1 SP1 (Build: 61025.2)