Microsoft plans critical update to Windows Server next week

Also slates fixes for PowerPoint, and will debut modified exploitability index

Computerworld - Microsoft today said it will patch a critical bug in its Windows server software and two other vulnerabilities in PowerPoint, the presentation maker bundled with Office.

After April's record-setting Patch Tuesday -- which fixed 64 flaws -- May's much lighter load was not surprising. Microsoft habitually takes an even-odd approach, with even-numbered months featuring fewer updates.

Of the two updates slated to ship May 10, Microsoft has classified one as "critical," the highest threat ranking in its four-step score, and the other as "important," the next-most serious.

The critical update will patch Windows Server 2003, Windows Server 2008 and Windows Server 2008 R2, the three still-supported editions of its server operating system.     Read More