Microsoft Corporation today released two security updates that patch three vulnerabilities in Windows. Only one of the three flaws is rated "critical," the highest ranking Microsoft uses, and the other two are only "important" and "moderate," the next two lower steps in the company's four ranks.
MS08-001 is the critical update that addresses two bugs in a trio of Windows' TCP/IP protocols.
Most of the issues are resolved unobtrusively for most users because these patches can be downloaded and installed via the Microsoft Update and Windows Update services, as well as through Windows Server Update Services. However, most ordinary users will receive the updates if they have their automatic updates enabled. The more problematic machines are for company or corporate computers in which the administrator would need to check that the updates were installed.