#patchtuesday Just psconfig it from Dustin Childs zero day blog:
"CVE-2023-21743 - Microsoft SharePoint Server Security Feature Bypass Vulnerability
You rarely see a Critical-rated Security Feature Bypass (SFB), but this one seems to qualify. This bug could allow a remote, unauthenticated attacker to make an anonymous connection to an affected SharePoint server. Sysadmins need to take additional measures to be fully protected from this vulnerability. To fully resolve this bug, you must also trigger a SharePoint upgrade action that’s also included in this update. Full details on how to do this are in the bulletin. Situations like this are why people who scream “Just patch it!” show they have never actually had to patch an enterprise in the real world."