This is the software publisher's description.
Microsoft Baseline Security Analyzer (MBSA) 2.0 is an easy-to-use tool that helps small and medium businesses determine their security state in accordance with Microsoft security recommendations and offers specific remediation guidance. Improve your security management process by using MBSA to detect common security misconfigurations and missing security updates on your computer systems.
Built on the Windows Update Agent and Microsoft Update infrastructure, MBSA ensures consistency with other Microsoft management products including Microsoft Update (MU), Windows Server Update Services (WSUS), Systems Management Server (SMS) and Microsoft Operations Manager (MOM). Used by many leading third party security vendors including Tivoli, Patchlink and Citadel, MBSA on average scans over 3 million computers each week. Join the thousands of users that depend on MBSA for analyzing their security state.
MBSA 2.0.1 is an update to MBSA 2.0 to enable compatibility with the new Windows Update (WU) offline scan file. This fix enables MBSA to download and read the new file format.
In order to run offline scans, MBSA 2.0 must have the scan file on the scanning machine. MBSA 2.0 automatically downloads this file if the scanning machine has Internet access. If not, the file must be downloaded and installed manually. MBSA 2.0.1 behaves in the same manner, except that it uses the new scan file.