Risk Scoring from A+ to F

Every time Vuln0x analyzes your application, all 27 scanning engines produce individual findings, each classified by severity: critical, high, medium, low, or informational. These findings are then fed into a weighted scoring algorithm that calculates a single composite score on a 0-100 scale, where 100 represents a clean bill of security health and 0 represents a critically vulnerable application.

The scoring methodology is designed to be both intuitive and actionable. Rather than simply counting vulnerabilities, the algorithm considers the severity of each finding, the category it belongs to, and its real-world exploitability. A single critical finding, such as an exposed .env file containing database credentials, will reduce the score significantly more than several low-severity informational notes about optional header improvements. This weighting ensures the score accurately reflects the true risk to your application rather than penalizing you equally for minor best-practice deviations and severe security failures.

The algorithm also rewards defense-in-depth. If your application has strong headers but weak SSL configuration, or excellent cookie security but exposed source maps, the score will reflect these gaps individually. You cannot compensate for a critical weakness in one area by excelling in another. This approach encourages comprehensive security hardening across all attack surfaces rather than selective improvements in easily fixed categories.

The final score maps to a familiar letter grade from A+ to F, making it instantly understandable for both technical and non-technical stakeholders. You do not need to interpret raw vulnerability counts or parse severity distributions. A single grade tells you where you stand, and the detailed breakdown shows you exactly how to improve.

A single scan tells you where you stand today. But security is not a point-in-time exercise. Code changes, dependencies update, server configurations drift, and new vulnerabilities are disclosed constantly. That is why Vuln0x provides side-by-side scan comparison that lets you track exactly what changed between any two scans of the same target.

When you compare two scans, the platform categorizes every finding into one of three groups: new findings that appeared since the previous scan, resolved findings that are no longer present, and unchanged findings that persist across both. This categorization makes it immediately clear whether your security posture improved, degraded, or stayed the same, and exactly which findings drove the change.

Scan comparison is particularly valuable after deploying fixes. When you resolve a set of vulnerabilities and re-scan, you can verify that those specific findings moved to the resolved column without new issues being introduced. It is also essential for regression detection: if a deployment inadvertently removes a security header or exposes a new file, the comparison will surface it as a new finding with full context about what changed.