Security Patch Management

Ensuring the integrity of supply chains is essential for maintaining the security and reliability of the Bulk Power System (BPS) in the face of evolving cybersecurity threats. The 2026 ERO Enterprise Compliance Monitoring and Enforcement Program (CMEP) Implementation Plan (IP) emphasizes supply chain security as an area of focus. CIP-007-6 R2 Security Patch Management strengthens supply chain security by requiring entities to patch vulnerabilities in third-party software, which is a common attack vector for supply chain attacks.

Key Components

• Patch Management Process: Establish a systematic approach for tracking, evaluating, and installing cyber security patches for applicable Cyber Assets, including the identification of a source or sources.
• Regular Evaluation: At least once every 35 calendar days from the last evaluation of the identified source or sources, evaluate security patches for applicability. Once the evaluation is completed, either apply the applicable patch or create or revise a mitigation plan.
• Mitigation Plans: For the identified mitigation plans, implement the plan within the specified timeframe unless changes or extensions to the specified timeframe are approved by the CIP senior manager or delegate.

While the Standard provides flexibility in addressing security patch management, adopting effective controls can significantly enhance the efficiency of a registered entity’s patch management process(es).

Best Practices and Internal Controls

• Clear Documentation: Maintain detailed records of all patch management activities, including evaluations and actions taken to address vulnerabilities.
• Tracking tools: Consider using patch management tools that log evaluation dates and patch installation confirmations automatically to reduce administrative errors.
• Timely reminders: Consider automated reminders and alerts to ensure deadlines and specified timeframes are consistently met.

By understanding the technical guidelines outlined in CIP-007-6 R2 and adopting best practices and internal controls, registered entities can foster an approach that not only ensures compliance but actively mitigates supply chain risks.

For more information and guidance on security patch management, review the ‘Guidelines and Technical Basis’ starting on page 38 for CIP-007-6 R2.