Certified Information Systems Auditor Practice Exam

The Common Vulnerability Scoring System (CVSS) is widely used to assess and classify the severity of vulnerabilities in software and systems. It provides a standardized method which helps organizations to prioritize their remediation efforts based on the severity of the vulnerabilities identified.

CVSS scores are derived from a combination of factors, including the access complexity for an attacker, the impacts on confidentiality, integrity, and availability, and whether the vulnerability requires user interaction. This scoring system generates a numerical score that ranges from 0 to 10, allowing for a clear and quantitative understanding of the risk associated with a vulnerability. The different metrics and criteria used in CVSS enable security teams to make informed decisions regarding which vulnerabilities need immediate attention and how they should be addressed.

The other options, while relevant in the broader context of information security management and risk assessment, do not specifically classify the severity of vulnerabilities like CVSS does. The Risk Management Framework (RMF) focuses more on the overall risk management process within organizations. An Information Security Management System (ISMS) outlines policies and controls for managing security risks but does not provide a scoring system for vulnerabilities. Meanwhile, the Operational Risk Score (ORS) is related to assessing risks associated with operational processes but does not serve to evaluate the severity