Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators may consider implementing a Cisco IOS Embedded Event Manager (EEM) policy that can be used on vulnerable Cisco IOS devices to identify and detect a memory leak that is caused by this vulnerability. The policy script is available at the following link: Cisco Beyond: Embedded Event Manager (EEM) Scripting Community
Apply hardware rate limiter features to limit packets that require processing by the device's CPU to mitigate DoS attacks.
Administrators are advised to monitor critical systems.