A remote code execution vulnerability exists in the way that Microsoft Outlook parses specially crafted email messages. An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Exploitation of this vulnerability requires that a user open or preview a specially crafted email message with an affected version of Microsoft Outlook. In an email attack scenario, an attacker could exploit the vulnerability by sending a specially crafted email message to the user and then convincing the user to preview or open the email.The update addresses the vulnerability by correcting the way that Microsoft Outlook parses specially crafted email messages.