A vulnerability has been reported in Mac OS X, which can be exploited by malicious people with physical access to a system to bypass certain security restrictions.

The vulnerability is caused due to an unspecified error and makes it possible to bypass the firmware password and start-up an Intel-based Macintosh computer in "Single User" mode.

Solution
Update to version 10.4.6.
Further details available in Customer Area

Provided and/or discovered by
The vendor credits David Pugh, University of Michigan.

Original Advisory
Apple:
http://docs.info.apple.com/article.html?artnum=303567

Deep Links
Links available in Customer Area