CVE-2010-2991: Citrix Online Plug-In For Windows For Xenapp & Xendesktop

High severity, CVSS 9.3. EPSS: 6.8% chance of exploitation in the next 30 days.

The IICAClient interface in the ICAClient library in the ICA Client ActiveX Object (aka ICO) component in Citrix Online Plug-in for Windows for XenApp & XenDesktop before 12.0.3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted HTML document that triggers the reading of a .ICA file.

Affected products

• Citrix Online Plug-In For Windows For Xenapp & Xendesktop: up to and including 12.0; version 11.1 only

Published 2010-08-11. Last modified 2026-06-16.