Documentation
Master Quant's powerful CVSS scoring capabilities. Learn how to accurately assess vulnerability severity across all CVSS versions with our comprehensive guide.
Getting Started
Start scoring vulnerabilities in minutes with Quant's intuitive interface.
- 1
Select a CVSS Version
Choose from v4.0 (latest), v3.1, v3.0, or v2.0 using the tabs at the top of the calculator.
- 2
Configure Metrics
Select values for each metric group: Base (required), Temporal/Threat, Environmental, and Supplemental (v4.0 only).
- 3
Watch Real-Time Updates
See your CVSS score update instantly as you select values, displayed prominently in the score card.
- 4
Export & Share
Copy the vector string, generate a shareable link, get embeddable HTML code, or save to the Score Manager.
CVSS Versions
Understand the differences between CVSS versions and when to use each one.
Advanced Features
Discover what makes Quant the most powerful nextgen CVSS calculator.
Watch your CVSS score update instantly as you adjust metrics. The score card displays current severity, rating, and vector string in real-time.
- Copy Vector: CVSS vector string for documentation
- Share Link: Pre-configured assessment URL
- Embeddable Code: HTML snippet to embed score cards on websites
- Save to Manager: Store assessments in the Score Manager for later and more advanced use
Save calculated scores to your browser. Sort, filter, compare, edit, delete, and restore previous assessments with ease.
- Side-by-Side Comparison: Compare multiple scores to identify differences
- Interactive Charts: Generate severity distribution and analytics charts
- Chart Export: Export charts as PNG images
- Import/Export History: Backup and restore your score collection
Generate interactive charts showing severity distribution, metric impact analysis, and comparative scoring across versions.
- Chart Export: Download charts as PNG images
- Embeddable Charts: Generate HTML code to embed charts on websites
- Interactive Controls: Customize chart appearance and settings
- Multiple Chart Types: Bar charts and donut charts available
Share assessments via URL with pre-configured metrics. Anyone can open the link to view your exact assessment or continue editing.
/?vector=CVSS:4.0/AV:N/AC:L/...Works completely offline with no internet required. All calculations happen in your browser, no data is ever sent to our servers.
Seamless theme switching for comfortable use in any environment. Respects system preferences and remembers your choice.
Export your complete assessment history as JSON and import it on other devices or browsers. Backup and restore your work easily.
Perfect experience on desktop, tablet, and mobile devices. Optimized UI for all screen sizes with touch-friendly controls.
In-context help explaining each metric, its implications, and scoring guidance. Understand the impact of every selection.
Client-side only processing. No account required. Zero data collection. Your vulnerability assessments remain completely private.
Severity Ratings
How CVSS scores map to severity levels.
None
No vulnerability
Low
Minimal impact
Medium
Moderate risk
High
Significant risk
Critical
Urgent action required
Low
Minor vulnerability
Medium
Moderate impact
High
Severe vulnerability
Frequently Asked Questions
Quick answers to common questions about Quant and CVSS.
Official Resources
Learn more about CVSS from the official FIRST.org sources.