Why CVE Counts and CVSS Scores Fail as Security Risk Metrics
By
XM Cyber
Front-window bakery material. Catches the eye, delivers the goods.
Summary
This article argues that CVE counts and CVSS scores are fundamentally flawed metrics for measuring security risk in organizations. The author draws from personal experience in vulnerability reviews where teams felt good about closing high-severity CVEs, only to be blindsided by incidents the metrics never predicted. The piece explains why this metric persists despite its inadequacy (due to audits, tooling constraints, and staffing realities) and advocates for more meaningful risk measurement approaches that focus on actual exposure reduction rather than counting vulnerabilities.
Key quotes
· 3 pulledI've sat in a lot of vulnerability reviews where the team felt good about the numbers. Closed tickets for high-CVSS CVEs were up. Critical findings were down. And then came the inevitable incident – the one the CVE count never saw coming.
The CVE count and CVSS scores remain the default language of vulnerability management. Yet neither one tells you whether you're actually reducing exposure.
In most cases, the teams running these programs already sense it – they're just constrained by the audits, tooling, and staffing realities they're working within.
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