SMS Extended Security Update Inventory tool
You may have already discovered that there are some security updates that are not detectable using the existing SMS Security Update Inventory Tool built on MBSA.
The solution to this issue comes with the SMS Extended Security Update Inventory tool is a scan tool built for helping those who wish to detect and update computers with those Sec-Updates that are not scannable by the MBSA. Like the SMS Software Update Inventory tool, this tool also has the instructions for locating each applicable update, downloading it from Microsoft, and deploying it using SMS . The SMS Extended Security Update Inventory Tool is built on Enterprise Scan Tool (EST) detection technology.
For the list of the un-scanable security updates and download the SMS ESUIT:
http://www.microsoft.com/downloads/details.aspx?FamilyID=2c93da1d-48a0-4e5c-991f-87e08954f61b&DisplayLang=en