CVE-2007-4687
The remote_cmds component in Apple Mac OS X 10.4 through 10.4.10 contains a symbolic link from the tftpboot private directory to the root directory, which allows tftpd users to escape the private directory and access arbitrary files.
Date published : 2007-11-14
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html