Cybersecurity | CVE

Advancements in Vulnerability Assessment: The Shift from CVSS to EPSS and the Role of the MITRE ATT&CK Framework

Evolving Vulnerability Assessment: The Journey from CVSS to EPSS

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Welcome to the high-stakes world of cybersecurity, where the good, the bad, and the vulnerable come into play. We’re not talking about a Hollywood movie plot, though the drama and suspense could give any blockbuster a run for its money. Instead, we delve into the fascinating world of vulnerability assessment and the shift from the Common Vulnerability Scoring System (CVSS) to the Exploit Prediction Scoring System (EPSS). So, prepare for a journey through the labyrinth of cybersecurity vulnerabilities!

Detailed Examination of the Common Vulnerability Scoring System (CVSS)

Before we can appreciate the evolution that EPSS represents, it’s crucial to dive deep into the functionality of CVSS. The Common Vulnerability Scoring System (CVSS) provides a way to capture the principal characteristics of a vulnerability and generate a numerical score reflecting its severity. The numerical score can then be translated into a qualitative representation (low, medium, high, and critical) to help organizations properly assess and prioritize their vulnerability management processes.

Understanding CVSS Metrics

CVSS comprises three metric groups: Base, Temporal, and Environmental.

1. The Base metrics produce a score ranging from 0 to 10, reflecting the intrinsic qualities of a vulnerability that are constant over time and across user environments.
2. The Temporal metrics reflect the characteristics of a vulnerability that change over time but not across user environments.
3. The Environmental metrics reflect the characteristics of a vulnerability that are relevant and unique to a particular user’s environment.

The Forthcoming CVSS 4.0: A New Standard in Vulnerability Assessment

As the cybersecurity landscape continues to evolve, so do the tools and frameworks used to…