Which of the following is best to use when determining the severity of a vulnerability?

CVSS, or Common Vulnerability Scoring System, is a standard method for assessing the severity of software vulnerabilities based on various metrics and factors. CVE, or Common Vulnerabilities and Exposures, is a list of publicly disclosed vulnerabilities, but does not provide a severity score. OSINT, or Open Source Intelligence, is the collection and analysis of publicly available information, which may or may not be relevant to a specific vulnerability. SOAR, or Security Orchestration, Automation and Response, is a set of tools and processes that automate and streamline security operations and incident response.