Cisco Small Business is a switch from Cisco, U.S.A. A buffer overflow vulnerability exists in Cisco Small Business RV110W, RV130, RV130W, RV215W Routers, which stems from insufficient validation of user fields in incoming HTTP packets. An attacker could use this vulnerability to execute arbitrary code via a specially crafted request or cause the device to unexpectedly reboot, resulting in a denial of service (DoS).