CVE-2007-2850: Citrix Access Essentials

High severity, CVSS 10.0. EPSS: 2.8% chance of exploitation in the next 30 days.

The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server 3.0, Presentation Server 4.0, and Access Essentials 1.0 and 1.5, allows remote attackers to bypass network security policies and connect to arbitrary TCP ports via a modified address:port string.

Affected products

• Citrix Access Essentials: version 1.0 only; version 1.5 only
• Citrix Metaframe: version 3.0 only; version 4.0 only

Published 2007-05-24. Last modified 2026-06-16.