* Understanding the Vulnerability:
* Vulnerabilities in the router CPU can be exploited to cause performance degradation, unauthorized access, or other security issues.
* Firmware Update:
* Firmware Role: The firmware is low-level software that controls the hardware of a device.
Updating the firmware can address vulnerabilities by providing patches and enhancements from the manufacturer.
* Procedure: Download the latest firmware from the vendor's website, follow the manufacturer's instructions to apply the update, and verify that the update resolves the vulnerability.
* Comparison with Other Options:
* Replace the System Board: This is a costly and often unnecessary step if the issue can be resolved with a firmware update.
* Patch the OS: Patching the OS is relevant for devices with a full operating system but not directly applicable to addressing a CPU vulnerability on a router.
* Isolate the System: Temporarily isolating the system can mitigate immediate risk but does not resolve the underlying vulnerability.
* Best Practice:
* Regularly check for and apply firmware updates to ensure that network devices are protected against known vulnerabilities.
References:
* CompTIA Network+ study materials on network security and device management.