What is the required action for applicable patches identified after an evaluation completion?

The correct choice emphasizes the importance of a structured response following the evaluation of applicable patches. In the context of NERC Critical Infrastructure Protection (CIP) standards, once patches are identified, they may address vulnerabilities that can pose risks to critical infrastructure. However, simply applying patches immediately might not always be feasible due to operational constraints, potential disruptions, or the need for further testing to ensure compatibility with existing systems.

Creating a dated mitigation plan serves as a formalized approach to document how the organization will address the identified patches. This plan can outline the timeline for patch deployment, the resources needed, and any interim security controls that may be implemented while the patches are being prepared for application. It demonstrates compliance with rigorous security management practices by ensuring that all necessary steps are documented and tracked, thus providing accountability and a clear action plan for addressing vulnerabilities in a timely manner.

In contrast, other options either lack accountability (e.g., ignoring patches) or may introduce unnecessary complications (e.g., consulting with external experts), which are not typically a standard requirement following an evaluation of patches. By focusing on a dated mitigation plan, the organization maintains a proactive stance on security while also preparing for responsible patch management.