CFNetwork in Apple Safari before 4.0 on Windows does not properly protect the temporary files created for downloads, which allows local users to obtain sensitive information by reading these files.
http://www.vupen.com/english/advisories/2009/1522
http://www.securityfocus.com/bid/35347
http://support.apple.com/kb/HT3613
http://securitytracker.com/id?1022342
http://secunia.com/advisories/35379
http://lists.apple.com/archives/security-announce/2009/jun/msg00002.html