Several models of popular Linksys-brand routers may impacted by a self-replicating worm that can exploit a security flaw in the router’s programming. The exploit allows attackers to install a worm in the firmware which can lead to further security breaches on any device connected to that router’s network. According to Linksys, this exploit requires that the routers have the “Remote Management” feature enabled on the device, a setting that is disabled by default on Linksys routers. Depending on who set up your router, this setting may have been enabled expressly for remote management purposes, and as such your device is vulnerable to the worm, dubbed “TheMoon”.

What this means for you:

Linksys routers are a popular choice for home and small businesses. Unless you know for certain your router is not a Linksys device, I would put an eyeball on your router and check the make and model against the list below.  Your network router is a critical point in your network’s overall security, and a compromised router can lead to a variety of problems and significant invasions of your privacy and safety. Even if your Linksys model is not named below, it’s important to check whether or not “Remote Management” is enabled on your device.

As of now, the following model routers are affected: E4200, E3200, E3000, E2500, E2100L, E2000, E1550, E1500, E1200, E1000, E900, E300, WAG320N, WAP300N, WAP610N, WES610N, WET610N, WRT610N, WRT600N, WRT400N, WRT320N, WRT160N and WRT150N. Linksys hasn’t confirmed whether this list will grow, as it does not want to reveal other models and make them targets for attacks. Until Linksys can patch the loopholes and issue firmware updates the only workaround is to disable the Remote Management feature, install the latest version of the firmware available, and reboot the router to clear any possible worms.