People still use IIS to serve sites?
Apparently so, it would seem.
https://en.wikipedia.org/wiki/Internet_Information_Services
Internet Information Services
Wikipedia
“IIS 8.5 is included in Windows Server 2012 R2 and Windows 8.1.”
Lots of app servers still use it.
Recent:
Apple Safari contains a vulnerability that could allow an unauthenticated, remote attacker to conduct remote code execution on the affected system. Updates are available.
A Critical remotely exploitable vulnerability has been discovered in the widely used Linux and Unix command-line shell, known as Bash, aka the GNU Bourne Again Shell, leaving countless websites, servers, PCs, OS X Macs, various home routers, and many more open to the cyber criminals.
Microsoft just seems to get more love. :)