All Windows users should immediately update their computers. An exploit rated 9.8/10 (CVE-2024-38063) compromises all devices running Windows with an IPv6 address.

To note: It shows even Windows Server 2008 as affected. Since MS is only testing against OSses they support, it is possible this has existed as a problem all the way back since IPv6 was first introduced to Windows XP.

Also, for all of you "disable IPv6 because I don't understand it" people... unless you are running Windows 8 or older, just update Windows. IPv4 has been out of addresses for so long that CGNAT is a thing, which means connectivity problems when you're hosting stuff, and more latency and packet drops from ISP routers getting saturated with NAT tasks. IPv6 is alive on the internet since 2011 and very much used on the internet, does not tie up routers by requiring NAT translation, and therefore just performs better. Plus, if you use your network printer's or network device's link-local ipv6 to connect locally, you will never have to deal with static ip address or changing ipv4 lan address pain, as link-local (non-routable on the internet) addresses don't change unless you force it.

Also don't use $35 routers for your internet. If your router does not support ipv6 firewalling, it is long since time to fix that with one that does.