Citrix » Metaframe : Security Vulnerabilities, CVEs, Published In 2006 (Denial of service)

The Independent Management Architecture (IMA) service (ImaSrv.exe) in Citrix MetaFrame XP 1.0 and 2.0, and Presentation Server 3.0 and 4.0, allows remote attackers to cause a denial of service (service exit) via a crafted packet that causes the service to access an unmapped memory address and triggers an unhandled exception.