CVE-2007-3959: Ipswitch Imserver

Medium severity, CVSS 5.0. EPSS: 6.5% chance of exploitation in the next 30 days.

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.

Affected products

• Ipswitch Imserver: version 2.0.5.30 only
• Ipswitch Ipswitch Collaboration Suite: up to and including 2.07

Published 2007-07-24. Last modified 2026-06-16.