Vendor: SIEMENS 
Model: Gigaset SE361 WLAN
Firmware version: v1.00.0

Details:

 

Changes page and inputs the fallowing chars GIF89a,=01@=01=80=01 which appears to be a crash with GIF image decoding. 

 

Causes continues loop of trying to access the login page until you close browser.Works under IE7 and Firefox.