Researchers Sound Alarm Over Critical Mac OS X Bug

Security researchers Tuesday warned that Apple’s OS X contains a critical vulnerability that attackers could use to hijack Macs running the older Leopard version of the operating system.
Although Leopard was supplanted by the new Snow Leopard operating system more than a year ago, the older version still accounts for about a third of all installations of Mac OS X.

It’s a variation of the bug that made JailbreakMe possible.