CVE-2013-4859

Vulnerability

The INSTEON Hub model 2242-222 (discontinued) exposes a web interface and API that require no authentication. The hub's default configuration does not enforce a username or password, and the web page is a legacy interface from previous hardware versions. This allows anonymous access to control any connected INSTEON or X10 devices, including lights, locks, thermostats, and sensors. The interface also reveals the device name (which may contain a street address) and the city/timezone, aiding physical location identification [1].

Exploitation

An attacker needs only network access to the hub, typically achieved by the user creating a port forward from the internet to the hub for remote smartphone control. No authentication or user interaction is required. The attacker can directly access the web page or API endpoints to enumerate device names and issue commands. The advisory notes that the device naming is unrestricted, so a user may inadvertently include their street address, making geolocation trivial via mapping software [1].

Impact

Successful exploitation allows an unauthenticated attacker to fully control all home automation devices connected to the hub. This includes turning lights on/off, changing thermostat settings, and operating RF deadbolts or door locks. The attacker can also infer the physical location of the hub through the exposed city and device name, potentially enabling targeted physical intrusion or harassment. The compromise affects confidentiality (location data), integrity (device state changes), and availability (disruption of normal operation) [1].

Mitigation

The affected model 2242-222 is discontinued and no official patch or firmware update has been released to address the authentication bypass. Users are advised to discontinue use of the hub or isolate it from the internet by removing any port forwarding rules. As of the advisory publication (August 2013), no workaround was provided by the vendor. The vulnerability is not listed on CISA's Known Exploited Vulnerabilities (KEV) catalog as of the CVE publication date [1].