Race condition in Login Window in Apple Mac OS X 10.6.x before 10.6.2, when at least one account has a blank password, allows attackers to bypass password authentication and obtain login access to an arbitrary account via unspecified vectors. Per:
"This issue does not affect systems prior to Mac OS X v.10.6."
"A user may log in to any account without supplying a password"
Publication date: Wed, 11 Nov 2009 01:30:00 +0000