ISO/IEC TR 20004:2012 refines the AVA_VAN assurance family activities defined in ISO/IEC 18045:2008 and provides more specific guidance on the identification, selection and assessment of relevant potential vulnerabilities in order to conduct an ISO/IEC 15408 evaluation of a software target of evaluation. ISO/IEC TR 20004:2012 leverages the Common Weakness Enumeration (CWE) and the Common Attack Pattern Enumeration and Classification (CAPEC) to support the method of scoping and implementing ISO/IEC 18045:2008(E) vulnerability analysis activities. ISO/IEC TR 20004:2012 does not define evaluator actions for certain high assurance ISO/IEC 15408 components, where there is as yet no generally agreed guidance.