What is Vulnerability Management?

What is Vulnerability Management?

Vulnerability management is the continuous process of identifying, classifying, prioritizing, and remediating security vulnerabilities in an organization's systems, software, and infrastructure. Unlike one-time assessments, vulnerability management is an ongoing program that adapts as new threats emerge and your environment changes.

The vulnerability management lifecycle

An effective program follows a repeating cycle:

1. Asset discovery — maintain an accurate inventory of all hardware, software, and cloud resources in scope
2. Vulnerability scanning — use automated tools to detect known vulnerabilities across your environment on a regular schedule
3. Prioritization — rank findings by severity (CVSS score), exploitability, asset criticality, and business context — not every "critical" CVE is critical to your organization
4. Remediation — apply patches, configuration changes, or compensating controls to address vulnerabilities within defined SLAs
5. Verification — rescan to confirm that remediation was effective and didn't introduce new issues
6. Reporting — track metrics like mean time to remediate (MTTR), vulnerability aging, and coverage rates

Vulnerability management in compliance frameworks

Most security frameworks require a formal vulnerability management program:

• PCI DSS — Requirement 6.3 requires patching critical vulnerabilities within defined timeframes; Requirement 11.3 requires internal and external vulnerability scanning
• SOC 2 — CC7.1 covers detection of vulnerabilities and CC8.1 addresses change management for remediation
• ISO 27001 — A.8.8 (management of technical vulnerabilities) requires timely identification and remediation of vulnerabilities
• NIST CSF — ID.RA (risk assessment) and PR.IP (information protection) directly relate to vulnerability identification and remediation
• CMMC — RA.L2-3.11.2 requires remediation of vulnerabilities in accordance with risk assessments

Common vulnerability scanning tools

• Infrastructure scanners — Nessus, Qualys, Rapid7 InsightVM for network and host-level vulnerabilities
• Application scanners — OWASP ZAP, Burp Suite for web application vulnerabilities
• Dependency scanners — Snyk, Dependabot, Trivy for software composition analysis (SCA)
• Cloud security posture — AWS Inspector, Azure Defender, GCP Security Command Center for cloud misconfigurations

SLA best practices

Define remediation timelines based on severity:

• Critical — remediate within 24–72 hours
• High — remediate within 7–14 days
• Medium — remediate within 30 days
• Low — remediate within 90 days or accept risk with documented justification

How episki helps

episki tracks vulnerability findings, manages remediation workflows with due dates and ownership, and maps vulnerabilities to compliance framework requirements. The platform provides dashboards showing remediation progress and aging metrics for auditors. Learn more on our compliance platform.