Microsoft released a security update for Internet Explorer 5.x and 6.0 . Knowledge base article 903235 discusses the matter however the article was not available at time this blog item was posted.
Security Update for Internet Explorer 5.01 for Windows 2000 (KB903235)
Security Update for Internet Explorer 6 Service Pack 1 (KB903235)
Security Update for Internet Explorer for Windows Server 2003 (KB903235)
Security Update for Internet Explorer for Windows XP Service Pack 2 (KB903235)
Security Update for Internet Explorer 5.5 Service Pack 2 (KB903235)
Security Update for Internet Explorer for Windows Server 2003 Itanium 64-bit Edition (KB903235)
Security Update for Internet Explorer for Windows Server 2003 x64-bit Edition (KB903235)