What is a Vulnerability?

A vulnerability is a flaw or weakness in a system’s design, implementation, or operation and management that could be exploited to violate the system’s security policy. Vulnerabilities that share common frameworks and events may be part of a vulnerability group (a.k.a. threat group).

Details

Vulnerabilities can have the following details:

Classification

An indication that the host is vulnerable.

CVE ID

All vulnerabilities have a Common Vulnerabilities and Exposures ID (CVE ID). Use this ID in searches for a vulnerability on the web or in the National Vulnerability Database (NVD). Prominent vulnerabilities can also have a vulnerability name.

Dynamic Vulnerability Exploit (DVE)

Predicts the likelihood that a vulnerability will be exploited in the next 90 days by modeling exploitation activity based on threat intelligence.

Evidence Available

Indications when evidence of exposure is available.

Evidence Certainty

A measure of how certain Bitsight is about a company's detection status.

Exploit Prediction Scoring System (EPSS)

Estimates the likelihood that a software will be exploited. The higher the percentage the more likely it’s to be exploited.

Exposure Detection

A company's protection status from a threat.

Vulnerability Severity

The criticality of a vulnerability. It is summarized by Bitsight severity, which follows the Common Vulnerability Scoring System (CVSS).

Bitsight uses the CVSS to determine the Severity of Vulnerabilities

Some vulnerabilities are more critical than others. They carry a greater weight than less critical vulnerabilities that are observed over the same time period.

Criticality is summarized by Bitsight severity. Bitsight severity is based on the Common Vulnerability Scoring System (CVSS), a scoring system that uses various properties of the vulnerability for determining its level of severity. Bitsight uses CVSS v.3.0 for scoring in the platform.

 

Bitsight Severity: vuln-severity-minor.png Minor

Slug name: minor

CVSS: 0.0 - 3.9

Bitsight Severity: vuln-severity-moderate.png Moderate

Slug name: moderate

CVSS: 4.0 - 6.9

Bitsight Severity: vuln-severity-material.png Material

Slug name: material

CVSS: 7.0 - 8.9

Bitsight Severity: vuln-severity-severe.png Severe

Slug name: severe

CVSS: 9.0 - 10.0

Resources

API

Threats API Endpoint

Emerging Security Events

Presents emerging vulnerabilities.

Vulnerabilities & Infections

The resource center for jajor security events.

Vulnerability Catalog Report

The Vulnerability Catalog for Security Posture Management.

Vulnerability Detection

Vulnerability Detection by application:

Continuous Monitoring

Security Posture Management

Cyber Insurance

  • March 19, 2026: Security Posture Management rebrand.
  • July 8, 2025: Evidence available.
  • April 3, 2025: Dynamic Vulnerability Exploit (DVE); Linked to the Emerging Security Events card.
  • October 18, 2024: Exploit Prediction Scoring System (EPSS).
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