Nick, a security professional in an eccouncil video

Full Certification Question

Nick, a security professional in an organization, introduced new tools and services into the organization. Before introducing the tools, he had to evaluate whether the tools are effective and appropriate for the organization. He used a publicly available and free-to-use list of standardized identifiers for software vulnerabilities and exposures to evaluate the tools. Which of the following databases did Nick use to evaluate the tools and services?