The initial step the CAE should take is to discuss the issue with the members of management responsible for the risk area. This discussion allows the CAE to understand the reasons for the lack of action, provide an opportunity for management to explain their position, and encourage them to implement the necessary mitigation measures. If this discussion does not lead to satisfactory action, the CAE would then escalate the issue to senior management or the board as appropriate.

The Institute of Internal Auditors (IIA), International Standards for the Professional Practice of Internal Auditing (Standards)

"Internal Auditing: Assurance and Advisory Services" by Urton L. Anderson et al.