There is a denial of service vulnerability in WebTV for Windows that may allow a malicious user to remotely crash either the WebTV for Windows application and/or the computer system running WebTV for Windows. Restarting the application and/or system will return the system to its normal state.Although the WebTV for Windows application ships with Windows 98/98SE, the application is not installed by default, and customers who have not installed it would not be at risk.Note: This vulnerability is not related to the WebTV™ service provided by WebTV Networks. WebTV is a service that provides Internet services to users via their television. WebTV for Windows is an unrelated product that enables users to view TV programs on their computer.