On Friday, a hacker group known as The Shadow Brokers publicly released a large number of functional exploit tools. Several of these tools make use of zero-day vulnerabilities, most of which are in Microsoft Windows. Exploiting these vulnerabilities in many cases leads to remote code execution and full system access.
Both end-of-support and current Windows versions are impacted, including Windows 2003, XP, Vista, 7, 2008, 8, and 2012. Microsoft has released patches for each vulnerability across all supported platforms, but will not be releasing patches for end-of-support versions of Windows. It is highly recommended that any end-of-support Windows systems be replaced or isolated, as these systems will often be impacted by new vulnerabilities, without the availability of a patch.
For zero-day vulnerabilities in Operating Systems, you can use your existing asset inventory information from Qualys AssetView, and search for any OS to determine how many vulnerable assets are deployed. This can be done without additional scanning if the data is relatively fresh.