CVSS v3.1 Specification Document - FIRST
...To produce the CVSS v3.1 formula, the CVSS Special Interest Group (SIG) framed the lookup table by assigning metric values to real vulnerabilities, and a severity group (low, medium, high, critical)....
https://www.first.org/cvss/v3-1/specification-document
NVD - Vulnerability Metrics
...All new and additional CVE assessments will be done using the CVSS v3.1 guidance. Vector strings for the CVE vulnerabilities published between to 11/10/2005 and 11/30/2006 have been upgraded from CVSS version 1.0 data....
https://nvd.nist.gov/vuln-metrics/cvss
Common Vulnerability Scoring System Version 3.1 - FIRST
...Links on the left lead to CVSS version 3.1's specification and related resources. A self-paced on-line training course is available for CVSS v3.1. It explains the standard without assuming any prior CVSS experience....
https://www.first.org/cvss/v3-1/
NVD - CVSS v3 Calculator
...This page shows the components of a CVSS assessment and allows you to refine the resulting CVSS score with additional or different metric values. Please read the CVSS standards guide to fully understand how to assess vulnerabilities using CVSS and to interpret the resulting scores....
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator
CVSS Scoring - Qualys
...You can see CVSS v2, v3.1, and v4 scores, along with vector strings for vulnerabilities and potential vulnerabilities, throughout the UI and in your reports. We do not display CVSS scores for information gathered....
https://docs.qualys.com/en/vm/latest/setup/cvss_scoring.htm
CVSS Calculator ? v2, v3.1 & v4.0 Vulnerability Scoring
...Free interactive CVSS calculator for v2.0, v3.0, v3.1 and v4.0. Compute base, temporal/threat and environmental scores, share a vector by URL, and see how the same vector scores against real CVEs in the database....
https://cve.tools/cvss
CVSS v3.1 Base Score Calculator
...Easy to use illustrated graphical Common Vulnerability Scoring System (CVSS) Base Score Calculator with hints...
https://cvss.js.org/
GitHub - FIRSTdotorg/cvss-resources: CVSS calculator and tooling public ...
...Tied to the 2025 VulnCon talk "CVSS By the Numbers", this tool compares sets of CVSS v3.1 and v4.0 vector strings and does mathematical analysis on the evaluations....
https://github.com/FIRSTdotorg/cvss-resources
Common Vulnerability Scoring System - Wikipedia
...The Common Vulnerability Scoring System (CVSS) is a framework for rating the severity of computer system vulnerabilities. Scores are calculated from metrics that approximate the ease and impact of exploits....
https://en.wikipedia.org/wiki/Common_Vulnerability_Scoring_System
CVSS 3.1 Vector String Fields, Base Score & Severity Rating Scale Explained
...This guide breaks down all CVSS 3.1 vector string fields (AV, AC, PR, UI, S, C, I, A), explains how the base score is calculated, walks through the severity rating scale, and shows how CVSS scoring fits into vulnerability management workflows....
https://secportal.io/blog/cvss-scoring-explained