NIST announces the release of NIST Interagency Report (NISTIR) 7946, CVSS Implementation Guidance. This Interagency Report provides guidance to individuals scoring IT vulnerabilities using the Common Vulnerability Scoring System (CVSS) Version 2.0 scoring metrics. The guidance in this document is the result of applying the CVSS specification to over 50 000 vulnerabilities scored by analysts at the National Vulnerability Database (NVD). This document is intended to serve as an extension to the CVSS Version 2.0 specification, providing additional guidance for difficult and/or unique scoring situations. To assist vulnerability analysts, common keywords and phrases are identified and accompanied by suggested scores for particular types of software vulnerabilities. The report includes a collection of scored vulnerabilities from the NVD, alongside a justification for the provided score. Finally, this report contains a description of the NVD’s vulnerability scoring process.