Vulnerability management is a proactive approach to securing systems by identifying and fixing vulnerabilities before they can be exploited by attackers. It involves scanning systems for known weaknesses, prioritizing and assessing the risks of those vulnerabilities, and applying patches or other remediation measures to mitigate them. Vulnerability management helps reduce the attack surface and prevent potential breaches. Reference:= Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) - Cisco, page 11.