The install wizard in DotNetNuke 4.0 through 5.1.4 does not prevent anonymous users from accessing functionality related to determination of the need for an upgrade, which allows remote attackers to access version information and possibly other sensitive information.
Unspecified vulnerability in DotNetNuke 4.0 through 4.8.4 and 5.0 allows remote attackers to obtain sensitive information (portal number) by accessing the install wizard page via unknown vectors.