CVSS Qualitative Severity Rating Scale

CVSS Qualitative Severity Rating Scale v1.0.0

The CVSS Qualitative Severity Rating Scale provides a categorical representation of a CVSS Score.

Value	Definition
None	No severity rating (0.0)
Low	Low (0.1 - 3.9)
Medium	Medium (4.0 - 6.9)
High	High (7.0 - 8.9)
Critical	Critical (9.0 - 10.0)

CVSS Qualitative Severity Rating Scale v1.0.0 JSON Example

{
  "namespace": "cvss",
  "version": "1.0.0",
  "schemaVersion": "1-0-1",
  "key": "QS",
  "name": "CVSS Qualitative Severity Rating Scale",
  "description": "The CVSS Qualitative Severity Rating Scale provides a categorical representation of a CVSS Score.",
  "values": [
    {
      "key": "N",
      "name": "None",
      "description": "No severity rating (0.0)"
    },
    {
      "key": "L",
      "name": "Low",
      "description": "Low (0.1 - 3.9)"
    },
    {
      "key": "M",
      "name": "Medium",
      "description": "Medium (4.0 - 6.9)"
    },
    {
      "key": "H",
      "name": "High",
      "description": "High (7.0 - 8.9)"
    },
    {
      "key": "C",
      "name": "Critical",
      "description": "Critical (9.0 - 10.0)"
    }
  ]
}

The CVSS Qualitative Severity Rating Scale is a set of labels that describe the severity of a vulnerability based on the CVSS Score.