One of the most common security issues with routers is outdated firmware. Firmware is the software that runs on the router, and like any software, it needs to be updated regularly to fix security vulnerabilities and improve performance. If a user does not update the router’s firmware, it can leave the device vulnerable to attacks.
Some routers also have default settings that leave them open to attack, such as the Universal Plug and Play (UPnP) feature, which can be exploited by attackers to gain access to the network.
Another issue is weak passwords. Many users use default passwords or passwords that are easily guessed, making it easy for hackers to gain access to the router and the devices connected to it.