A router’s firmware is the software that controls how it manages network traffic and security. Manufacturers regularly release updates to fix security flaws that could be exploited by hackers, making these updates crucial for keeping your network protected. Without them, even a single unpatched vulnerability can leave your home or business exposed to threats.
Many consumer routers don’t update automatically, requiring users to manually check for updates through the manufacturer’s app or admin page. Routers that no longer receive firmware updates—often labeled as “end-of-life”—are especially risky, as they can’t defend against newer threats. Replacing such devices is a common recommendation to maintain strong network security.