Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities

Vulnerability

The vulnerability resides in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W routers. It stems from improper validation of user-supplied input, allowing an authenticated attacker with administrator credentials to send crafted HTTP requests that trigger a buffer overflow or similar memory corruption. No software updates have been released by Cisco to address this issue [1].

Exploitation

An attacker must have valid administrator credentials for the affected device. The web-based management interface is accessible over the local LAN (cannot be disabled) or over the WAN if the remote management feature is enabled (disabled by default). The attacker sends specially crafted HTTP requests to the interface; no additional user interaction is required beyond authentication [1].

Impact

Successful exploitation allows the attacker to execute arbitrary code with root privileges on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition. This gives the attacker full control over the router, potentially enabling further network compromise [1].

Mitigation

Cisco has not released software updates that address these vulnerabilities, and no workarounds are available. As a precaution, administrators should disable the remote management feature if it is not required. The affected devices may be approaching end-of-life; users should consider upgrading to supported models. This vulnerability is not currently listed in the Known Exploited Vulnerabilities (KEV) catalog [1].