Unspecified vulnerability in the Windows client API in Novell GroupWise 7 before SP3 and 6.5 before SP6 Update 3 allows remote authenticated users to access the non-shared stored e-mail messages of another user who has shared at least one folder with the attacker.

More... (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-1330)