What issue should be addressed regarding a consumer-grade wireless router with a web server vulnerability?

The primary concern with a consumer-grade wireless router that has a web server vulnerability is firmware patch management. Consumer-grade routers often run on firmware that can have security flaws, which may be exploited by attackers if not updated. These vulnerabilities can allow unauthorized access or exploitation of the router itself, impacting the security of the network it connects to.

To mitigate this risk, it's essential to regularly check for and apply firmware updates provided by the manufacturer. Firmware patches often contain fixes for known vulnerabilities, enhancements, and security features that can significantly improve the overall security posture of the device. By ensuring that the router's firmware is up to date, users can protect their network from potential threats associated with these vulnerabilities, thereby maintaining a secure environment.

While access control lists, network segmentation, and encryption protocols are important security measures, they do not directly address the vulnerabilities stemming from outdated or unpatched firmware specifically found in consumer-grade routers.