CVE-2005-2509: Apple Mac OS X

Low severity, CVSS 2.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Unknown vulnerability in loginwindow in Mac OS X 10.4.2 and earlier, when Fast User Switching is enabled, allows attackers to log into other accounts if they know the passwords to at least two accounts.

Affected products

• Apple Mac OS X: version 10.0 only; version 10.0.1 only; version 10.0.2 only; version 10.0.3 only; version 10.0.4 only; version 10.1 only; …
• Apple Mac OS X Server: version 10.0 only; version 10.1 only; version 10.1.1 only; version 10.1.2 only; version 10.1.3 only; version 10.1.4 only; …

Published 2005-08-19. Last modified 2026-06-16.