Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM) Login

Updated

The Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM) is a modem-router (gateway) whose admin page answers on 10.0.0.1. Each unit has its own admin password printed on the device label — there is no shared default.

Contents
  1. Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM) default login
  2. How to log in to the Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM)
  3. If the login does not work
  4. Other Xfinity (Comcast) models
  5. More help
  6. Frequently asked questions

Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM) default login

ModelLogin addressUsernamePasswordSource
xFi Gateway XB7 (CGM4331COM)10.0.0.1adminOn the label (unique)Official doc

Checked against Xfinity Support — Change your WiFi with the Gateway Admin Tool on 31 Aug 2026 (medium confidence), via the ssid.ai dataset (CC BY 4.0).

“There is no universal admin/password on current XB7 firmware.”

How to log in to the Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM)

  1. Connect to the Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM) by Wi-Fi or a network cable. On a phone, turn off mobile data.
  2. Open a browser and go to 10.0.0.1.
  3. Sign in with admin / On the label (unique).
  4. Open the Wireless or Wi-Fi section to change the network name and password.

If the login does not work

  • Check the label first. This model has a unique password printed on the device — admin / admin will not work.
  • Someone may have changed it. A factory reset restores the login above.
  • Reset: hold the Reset button for about 10 seconds while the device is powered on.
  • Wrong address? Check your default gateway — see how to find your router’s IP.
  • Type http://, not https://, and turn off any VPN or Private DNS.

Other Xfinity (Comcast) models

ModelLogin addressUsernamePasswordSource
Xfinity Advanced Gateway XB10App only—App only (no web login)Official doc
xFi Gateway XB8 (CGM4981COM)10.0.0.1adminOn the label (unique)Official doc

More help

Frequently asked questions

What is the default password for the Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM)?

Username admin, password On the label (unique).

What is the Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM) IP address?

The admin page is at 10.0.0.1.

How do I reset the Xfinity (Comcast) xFi Gateway XB7 (CGM4331COM)?

Hold the Reset button for about 10 seconds while the device is powered on.