3 new Microsoft security bulletins

Critical:

Vulnerability in Microsoft Internet Security and Acceleration Server 2000
H.323 Filter Could Allow Remote Code Execution (816458)
http://www.microsoft.com/technet/treeview/?url=/technet/security/bulletin/MS04-001.asp


Important:

Buffer Overrun in MDAC Function Could Allow Code Execution (832483)
http://www.microsoft.com/technet/treeview/?url=/technet/security/bulletin/MS04-003.asp


Moderate:

Vulnerability in Exchange Server 2003 Could Lead to Privilege Escalation
(832759)
http://www.microsoft.com/technet/treeview/?url=/technet/security/bulletin/MS04-002.asp