Security Update for Windows XP SP3 (KB4022747)
Last Modified: 6/10/2017
Description: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.

Description of the security update of Windows XP and Windows Server 2003: June 13, 2017
A remote code execution vulnerability exists in Remote Desktop Protocol (RDP) if the RDP server has Smart Card authentication enabled. An attacker who successfully exploited this vulnerability could execute code on the target system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

To exploit this vulnerability, an attacker would need to run a specially crafted application against an RDP server which has Smart Card authentication enabled. Smart Card authentication is a non-default configuration; systems without it enabled are not vulnerable.

CVE-2017-0176