EPSS and Its Role in Cisco Vulnerability Management Risk Scoring
Learn about EPSS, how it compares to CVSS, and the role it plays in Cisco Vulnerability Management’s risk scoring.
Keeping Up with Security Vulnerability Disclosures with the Cisco PSIRT openVuln API
The Cisco PSIRT openVuln API is a RESTful API that allows customers to obtain Cisco security vulnerability information in different machine-consumable formats. It supports industrywide security standards such as the Common Vulnerability Reporting Framework (CVRF), Open Vulnerability and Assessment Language (OVAL), Common Vulnerability and Exposure (CVE) identifiers, Common Weakness Enumeration (CWE), and the Common Vulnerability Scoring System (CVSS). This API […]
Scoring Cisco Security Vulnerabilities with CVSSv3
The Cisco Product Security Incident Response Team (PSIRT) is now scoring all security advisories addressing security vulnerabilities that affect Cisco products and multivendor vulnerability alerts using the Common Vulnerability Scoring System version 3 (CVSSv3). The stakeholders at the Forum of Incident Response and Security Teams (FIRST) have done a great job in this new version […]
The Evolution of Scoring Security Vulnerabilities: The Sequel
Back in April, I wrote a blog post about the new version of the Common Vulnerability Scoring System (CVSS). The changes made for CVSSv3 addressed some of the challenges that existed in CVSSv2. For example, CVSSv3 analyzes the scope of a vulnerability and identifies the privileges an attacker needs to exploit it. The CVSSv3 enhancements […]
The Evolution of Scoring Security Vulnerabilities
The Common Vulnerability Scoring System (CVSS), which is used by many in the industry as a standard way to assess and score security vulnerabilities, is evolving to a new version known as CVSSv3. These changes addressed some of the challenges that existed in CVSSv2; CVSSv3 analyzes the scope of a vulnerability and identifies the privileges […]
CVSS Version 3 Available For Public Comments
The Common Vulnerability Scoring System (CVSS) Special Interest Group (SIG), in which Cisco is an active participant, acting on behalf of FIRST.org, has published a preview of the upcoming CVSS v3.0 scoring standard. The CVSS v3.0 preview represents a near final version and includes metric and vector strings, formulas, scoring examples and a v3.0 calculator […]
I Can’t Keep Up with All These Cisco Security Advisories: Do I Have to Upgrade?
"A security advisory was just published! Should I hurry and upgrade all my Cisco devices now?" This is a question that I am being asked by customers on a regular basis. In fact, I am also asked why there are so many security vulnerability advisories. To start with the second question: Cisco is committed to protecting customers by sharing critical security-related information in a very transparent way. Even if security vulnerabilities are found internally, the Cisco Product Security Incident Response Team (PSIRT) – which is my team – investigates, drives to resolution, and discloses such vulnerabilities. To quickly answer the first question, don't panic, as you may not have to immediately upgrade your device. However, in this article I will discuss some of the guidelines and best practices for responding to Cisco security vulnerability reports.