4.3.2.0 and above. If your firmware is older, immediately contact your ISP. This vulnerability compromises your entire home network.
Perform a 30-30-30 hard reset: Hold the reset button on the back for 30 seconds with power on, keep holding while unplugging for 30 seconds, then keep holding while plugging back in for another 30 seconds. Release. This forces the modem to request a fresh firmware download. sagemcom cs 50001 firmware