The Brown Orifice Vulnerability

 This vulnerability has been identified in Netscape Communicator
 versions 4.0 through 4.74 on Windows, Macintosh and Unix operating
 systems. This vulnerability does not affect Netscape 6 Preview
 Release 1 or Preview Release 2. Netscape has released Netscape
 Communicator 4.75, which is not subject to this vulnerability.