Microsoft WinNT/2000 ''ResetBrowser Frame'' and ''HostAnnouncement Flooding'' Vulnerability - Version 6-4-2000 Microsoft has released a patch that eliminates two security vulnerabilities, one affecting Microsoft(r) Windows NT(r) 4.0 and Windows(r) 2000, and the other affecting Windows NT 4.0 only. Under certain conditions, the vulnerability could allow a malicious user to make it difficult or impossible for other users to locate services and computers on a network; in the worst case, it could allow him to provide incorrect information about the same services and computers.