The showHelp function in Internet Explorer 6 on Windows XP Pro allows remote attackers to execute arbitrary local .CHM files via a double backward slash ("\\") before the target CHM file, as demonstrated using an "ms-its" URL to ntshared.chm. NOTE: this bug may overlap CVE-2003-1041.

Internet Explorer 5.x and 6.0 allows remote attackers to execute arbitrary programs via a modified directory traversal attack using a URL containing ".." (dot dot) sequences and a filename that ends in "::" which is treated as a .chm file even if it does not have a .chm extension. NOTE: this bug may overlap CVE-2004-0475.