All client versions of Windows are affected by at least two bulletins that have been rated critical. Windows 8.1 and Windows 10 are affected by the most, with Windows 8.1 being affected by four critical and 3 important bulletins, and Windows 10 by 5 critical and 3 important vulnerabilities.
For those folks who might have insomnia Microsoft TL-DR Please keep your software up to date!
PSE 21, On1 Photo RAW 22, Image Composite Editor, Windows 10