The send-private-message functionality (send-private-message.asp) in PD9 Software MegaBBS 2.1 allows remote attackers to read private messages of other users via a modified replyid parameter.
Unspecified vulnerability in PD9 Software MegaBBS 2.0 and 2.1 allows attackers to gain privileges via unknown vectors involving (1) admin/userlevelmembers-edit.asp and (2) admin/edit-groups.asp.