Software Risk Assessment for Windows Operating Systems with respect to CVSS

CVSS is recognized as a de facto standard for categorizing and measuring software vulnerabilities in both how easy for exploitation for the given security bug and how much impact on a system having the vulnerability in a sense of the three security factors. Meanwhile, since the early 2000s, quantitative risk assessments of software systems had been able to be examined thanks to the accumulated enough datasets for a scientific investigation. However, there are still a lot of research attempts not to be taken in a quantitative examination of software risk assessments. In this paper, we are quantitatively analyzing CVSS scores in vulnerabilities from the three most recent Windows products, namely, Windows 7, Windows 8.1 and Windows 10. The result shows that AML vulnerability discovery model represents Windows vulnerability discovery trend reasonably. Furthermore, we found explicitly that, most of the time, security bugs are compromised with no authentication required systems. This result is corresponding with the output from the previous research based on Web browsers.