How Edgescan’s integrated scoring systems deliver actionable intelligence for ransomware defense and strategic remediation
Edgescan leverages the Exploit Prediction Scoring System (EPSS) and its proprietary Edgescan eXposure Factor (EXF) to deliver significant value to its clients by prioritizing vulnerability remediation and enhancing overall security posture. This approach is particularly effective in addressing ransomware-related vulnerabilities.
EPSS and EXF Integration
The EPSS is a data-driven model that estimates the likelihood of a software vulnerability being exploited in the wild. It generates a probability score ranging from 0 to 1, with higher scores indicating a greater likelihood of exploitation. By incorporating EPSS, Edgescan can prioritize vulnerabilities based on their potential for exploitation rather than solely on their severity.
The EXF, on the other hand, is a comprehensive scoring system developed by Edgescan. It combines data from EPSS, the Common Vulnerability Scoring System (CVSS), and the Cybersecurity and Infrastructure Security Agency’s Known Exploited Vulnerabilities (CISA KEV) catalog. This integration allows EXF to provide a unified score ranging from 0 to 100, indicating the risk level of each vulnerability. A higher EXF score signifies a greater risk, helping organizations focus on the most critical threats.
Validation Process
At Edgescan, our validation methodology sets the industry standard for vulnerability accuracy. Our advanced continuous testing platform combines enterprise-grade scanning technology with expert manual penetration testing and validation. This full-stack approach eliminates false positives and provides customers with an exact, real-time view of their security posture. The validated findings directly inform our EXF scoring, ensuring precise risk quantification and actionable intelligence.
Delivering Strategic Value
The integration of EPSS predictive modeling and our proprietary EXF scoring empowers organizations to implement data-driven remediation strategies. This is particularly crucial for security teams managing extensive vulnerability backlogs with finite resources. By focusing remediation efforts on vulnerabilities that present the highest likelihood of exploitation and business impact, organizations can significantly reduce their mean time to remediation (MTTR) and strengthen their security foundation.
Ransomware Vulnerability Intelligence
Modern ransomware campaigns actively target known vulnerabilities across the attack surface. Edgescan’s platform provides deep visibility into ransomware-exploitable vulnerabilities through advanced threat correlation. By combining EPSS exploitation probability data with EXF risk scoring, organizations can identify and prioritize vulnerabilities that align with current ransomware TTPs (Tactics, Techniques, and Procedures).
Our correlation engine maps vulnerabilities against multiple threat intelligence sources, including the CISA KEV catalog, to provide context-aware risk scoring. When a vulnerability demonstrates high EPSS metrics and appears in authoritative threat feeds, the EXF score reflects this elevated risk profile, enabling rapid response prioritization. This intelligence-driven approach optimizes security resources while providing focused protection against ransomware threats.
The recent expansion of the CISA KEV catalog, including critical vulnerabilities CVE-2024-9463 and CVE-2024-9465, underscores the evolving threat landscape. Edgescan’s integrated EPSS and EXF scoring ensures organizations maintain resilient security postures through precise vulnerability intelligence and risk-based remediation.
Edgescan’s integration of the Exploitability and Prevalence Security Score (EPSS) and the Exploit Framework (EXF), along with thorough validation, equips clients with an effective tool for prioritizing and addressing vulnerabilities. This approach is especially efficient in mitigating threats related to ransomware, providing significant value by strengthening security and lowering the risk of exploitation.
