Vulnerability defined as the weakness that allows the attacker to enter in and harm, it may be a flaw in design or misconfiguration. National Vulnerability Database includes databases of security checklists, security-related software flaws, misconfigurations, product names, and impact metrics. National Council of ISACs is the U.S. government repository of standards-based vulnerability management data represented using the Security Content Automation Protocol (SCAP) Common Vulnerability Scoring calculator has been introduced.”]
Source: https://gbhackers.com/sources-trace-new-vulnerabilities/