CVE-2007-4693
The SecurityAgent component in Mac OS X 10.4 through 10.4.10 allows attackers with physical access to bypass the authentication dialog of the screen saver and send keystrokes to a process, related to "handling of keyboard focus between secure text fields."
Date published : 2007-11-14
http://lists.apple.com/archives/security-announce/2007/Nov/msg00002.html