MS Patch Tuesday heads-up: 7 bulletins, 23 vulnerabilities

All versions of Microsoft's flagship Windows operating system are affected by this month's releases, including the newest Windows 7 and Windows Server 2008 R2.

Microsoft's May batch of security patches will include fixes for at least 23 serious security vulnerabilities affecting the Windows ecosystem.

According to an advance notice from Microsoft, there will be a total of 7 bulletins addressing 23 security holes in Microsoft Windows, Office, Silverlight, and .NET Framework.

Three of the seven bulletins will be rated critical because of the risk of remote code execution attacks.

All the others will carry an "important" rating and will cover vulnerabilities that can cause code execution of privilege escalation attacks.

All versions of Microsoft's flagship Windows operating system are affected by this month's releases, including the newest Windows 7 and Windows Server 2008 R2.

Windows users will also want to pay special attention to the Microsoft Office updates.  Microsoft expects to ship the patches by 1:00 PM Eastern on Tuesday May 8, 2012.