I don't remember where I saw it- AO, another security site or one of many security mailing lists I am on- but there was recently some discussion of a free tool available from Microsoft to scan a system and report back what patches are installed on it.

This is different than MBSA or HFNetChk. It was not a vulnerability scanner. It simply reported what patches are on the system already - not which ones were missing or any other security lapses.

Can anyone help point me in that direction??