The IM Server (aka IMserve or IMserver) 2.0.5.30 and probably earlier in Ipswitch Instant Messaging before 2.07 in Ipswitch Collaboration Suite (ICS) allows remote attackers to cause a denial of service (daemon crash) via certain data to TCP port 5179 that overwrites a destructor, as reachable by the (1) DoAttachVideoSender, (2) DoAttachVideoReceiver, (3) DoAttachAudioSender, and (4) DoAttachAudioReceiver functions.

Format string vulnerability in the logging function in the IM Server (aka IMserve or IMserver) in Ipswitch Instant Messaging (IM) 2.0.8.1 and earlier allows remote authenticated users to cause a denial of service (daemon crash) and possibly have unspecified other impact via format string specifiers in an IP address field.

Directory traversal vulnerability in the IM Server (aka IMserve or IMserver) in Ipswitch Instant Messaging (IM) 2.0.8.1 and earlier allows remote authenticated users to create arbitrary empty files via a .. (dot dot) in the recipient field.