CVSS Calculator
Calculate a CVSS v3.1 base score and build or validate its eight-metric vector.
01
Base metrics
9.8/ 10
Critical
Impact5.87
Exploitability3.89
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HBase severity · FIRST CVSS v3.1
How it works
Implements the FIRST CVSS v3.1 base equations and prescribed rounding for eight metrics: attack vector, complexity, privileges, interaction, scope and confidentiality/integrity/availability impact. Choose metrics or paste a complete CVSS:3.1 base vector.
The result describes base severity, not the probability of exploitation or business risk. This calculator supports v3.1 base metrics only; v4.0, temporal and environmental vectors are not accepted. For prioritization, use the CVE checker alongside exposure and asset context.