SmartScreen Prompt Security Feature Bypass Vulnerability. A user needs to be tricked into running malicious files. To exploit this security feature bypass vulnerability, an attacker would need to convince a user to launch malicious files using a launcher application that requests that no UI be shown. In an email or instant message attack scenario, the attacker could send the targeted user a specially crafted file that is designed to exploit the remote code execution vulnerability. In any case an attacker would have no way to force a user to view attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could entice a user to either click a link that directs the user to the attacker's site or send a malicious attachment.