If you haven't hit the Windows Update button yet today, you should. Microsoft has released its July 2007 security bulletin, which includes six updates: three are designated "critical" by the software giant; two are deemed "important," and one is ranked "moderate." Two affect Microsoft Office, and one affects the Windows Vista Firewall. This patch cycles also addresses one flaw first reported in 2005. To keep your Windows XP SP1 system secure, update to Windows XP SP2 today.

MS07-036: Critical  - Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (936542)
MS07-037: Important  - Vulnerability in Microsoft Office Publisher 2007 Could Allow Remote Code Execution (936548)
MS07-038: Moderate - Vulnerability in Windows Vista Firewall Could Allow Information Disclosure (935807)
MS07-039: Critical - Vulnerability in Windows Active Directory Could Allow Remote Code Execution (926122),
MS07-040: Critical - Vulnerabilities in .Net Framework Could Allow Remote Code Execution (931212)
MS07-041: Important - Vulnerability in Microsoft Internet Information Services Could Allow Remote Code Execution (939373)