In TP-LINK TL-WR741N / TL-WR741ND 150M Wireless Lite N Router with Firmware Version 3.11.7 Build 100603 Rel.56412n and Hardware Version: WR741N v1/v2 00000000, parameter SSID in the "Wireless Settings" is not properly validated. It's possible to inject malicious code: </script><H1>BUG/* </script><a href=XXX.com>. The second payload blocks the change of wireless settings. A factory reset is required.