Citrix Metaframe Presentation Server 3.0 and 4.0 allows remote attackers to bypass policy restrictions by downloading the launch.ica file and changing the client device name (ClientName).

Citrix Metaframe Password Manager 2.5 and earlier stores a password in cleartext although it is obfuscated when presented to a user, which allows users to view their secondary passwords even if it is not allowed by policy.

The Citrix MetaFrame Password Manager 2.0, when a central credential store is not configured, does not encrypt passwords entered immediately after executing the First Time User Wizards, which allows local users to gain sensitive information.

Stack-based buffer overflow in the client for Citrix Program Neighborhood Agent for Win32 8.00.24737 and earlier and Citrix MetaFrame Presentation Server client for WinCE before 8.33 allows remote attackers to execute arbitrary code via a long cached icon filename in the InName XML element.

Citrix Program Neighborhood Agent for Win32 8.00.24737 and earlier and MetaFrame Presentation Server client for WinCE before 8.33 allows remote servers to create arbitrary shortcuts on the client via a full UNC path in the AppInStartmenu directive.

Cross-site scripting (XSS) vulnerability in login.asp in Citrix MetaFrame XP Server 1.0 allows remote attackers to inject arbitrary web script or HTML via the NFuse_Message parameter.

Cross-site request forgery (CSRF) vulnerability in Citrix Presentation Server 4.0 and 4.5, MetaFrame Presentation Server 3.0, and Access Essentials 1.0 through 2.0 allows remote attackers to execute arbitrary published applications, and possibly other programs, as authenticated users via the InitialProgram key in an ICA connection. NOTE: some of these details are obtained from third party information.

Citrix MetaFrame 1.8 Server with Service Pack 3, and XP Server Service Pack 1 and earlier, allows remote attackers to cause a denial of service (crash) via a large number of incomplete connections to the server.

CITRIX Metaframe 1.8 logs the Client Address (IP address) that is provided by the client instead of obtaining it from the packet headers, which allows clients to spoof their public IP address, e.g. through Network Address Translation (NAT).

The Citrix ICA (Independent Computing Architecture) protocol uses weak encryption (XOR) for user authentication.