Sam Mccandlish

**Name of the Vulnerable Software and Affected Versions** Mac OS X versions 10.4.2 and earlier **Description** The issue concerns a problem in the loginwindow component of Mac OS X. When Fast User Switching is enabled, it allows attackers to log into other accounts if they know the passwords to at least two accounts. **Recommendations** For Mac OS X versions 10.4.2 and earlier, update to a version later than 10.4.2 to resolve the issue.