Some of what you see here is sample content. While the community forms, part of the members, reviews, ratings and discussions are seeded examples. Every one is badged Sample, and they do count towards the totals on this site. Vendor pages, the security data and the tools are real.
CVSS 3.1 calculator
The official base metrics, scored the way the specification says, with the vector string ready to paste into a ticket or an advisory. The URL carries the vector, so a link is the whole finding.
Everything you type stays in this tab. Share copies a link, never your inputs, unless the tool says it encodes them in the URL.
Paste a vector here to load it, or copy this one out.
Base score only. Temporal and environmental metrics change the number for your environment, and a base score pretending to be an environmental one is how a shared spreadsheet ends up driving the wrong patch order.