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What vulnerability prioritization looks like when KEV, EPSS, and CVSS disagree

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What vulnerability prioritization looks like when KEV, EPSS, and CVSS disagree

Dr. Joye Purser of Cohesity outlines a vulnerability prioritization framework that reconciles conflicts between the Known Exploited Vulnerabilities (KEV) catalog, Exploit Prediction Scoring System (EPSS), and Common Vulnerability Scoring System (CVSS) metrics. The approach prioritizes active exploitation first, followed by exploit likelihood and technical severity, then applies context filters including asset exposure, business criticality, and compensating controls. For exploited internet-facing systems, the framework targets a 24 to 72 hour remediation window.

Why it matters: Security teams managing large vulnerability backlogs need a decision tree for remediation sequencing when scoring systems conflict; this framework bridges KEV, EPSS, and CVSS to focus effort on the highest-risk fixes first.

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