Microsoft just patched a 15-year-old bug that in some cases allows attackers to take complete control of PCs running all supported versions of Windows.
This Windows vulnerability isn't as simple as most to fix because it affects the design of core Windows functions rather than implementations of that design.
Хвалёная архитектура во все поля. И такая же хвалёная поддержка.
Patch now, unless you run 2003, in which case you're out of luck.