Out of 48,000 Vulnerabilities Only 1% Are Dangerous: How to Find Them Using CVSS 4.0, EPSS, KEV and FSTEC Methodology
The article explains why prioritizing vulnerabilities is critical in 2025-2026 as exploitation became the top initial access vector for the first time in 19 years according to Verizon DBIR. It details the limitations of CVSS scoring alone, the shift to CVSS 4.0 with new metrics like Attack Requirements and Supplemental Metrics, and the impact of NIST reducing NVD enrichment to only actively exploited or federal software cases. EPSS provides daily exploitation probability predictions using machine learning on over 1,100 features, while CISA KEV and the new LEV metric help identify confirmed or likely exploited vulnerabilities. The text covers practical prioritization criteria including asset significance, exploit availability, and network exposure, plus challenges for Russian infrastructure due to CVE dependency. It also compares CISA KEV with commercial catalogs like VulnCheck KEV that detect exploitation earlier.
HabrAug 26, 2026Translated from Russian