The Common Vulnerability Scoring System (CVSS) is a framework for rating the severity of security
vulnerabilities. CVSS provides three main score areas: Base, Temporal, and Environmental.
Base Score evaluates the intrinsic qualities of a vulnerability.
Temporal Score reflects the characteristics of a vulnerability that change over time.
Environmental Score considers the specific impact of the vulnerability on a particular organization,
tailoring the Base and Temporal scores according to the importance of the affected IT asset.
Reference:
FIRST, "Common Vulnerability Scoring System v3.1: Specification Document".