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brianph1
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Friday, February 20th, 2026 6:21 PM

Netgear CM2050V upload speed issues

I have seen other threads on getting faster upload speeds with the Netgear CM2050V [0] but I seem to be having the same problem with uploads limited to 41Mbps with a newly installed modem.

I'll explain and maybe someone from Xfinity can help me?

From the modem login page it shows the most recent firmware:

Hardware Version 1.01
Cable Firmware Version V10.01.03

I already spent a few hours in a chat, and a tech was here yesterday to confirm it wasn't a cabling issue, but I still have slow upload speeds. I asked the tech if there was anything I needed to do and he mentioned since it was a customer-owned modem it was all on me. That doesn't seem to be the case as there is no way for the customer to upgrade the firmware, and there are no settings in the modem login page that I can see. The tech also claimed his test modem was able to do 350Mbps upload, although when he used speedtest.xfinity.com it only showed 41Mbps.

So I'm stuck - is there any solution? Is the speedtest being throttled somehow? I've tried others and they similar numbers. I figured I would be seeing at least 100Mbps upload.

Thanks for any information,

-Brian

[0] https://forums.xfinity.com/conversations/your-home-network/netgear-cm2050v-upload-speed-not-performing/67c1f09d7bc6900053207651

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5 hours ago

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Enchantech

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2 days ago

Not sure where you live but are you sure your service plan supports upload speeds above 41Mbps?  In my area the top service plan is 1300Mbps down with 35Mbps up and 41Mbps up is achievable.

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brianph1

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Thanks for the response. Yes I confirmed my area supports mid/high tier service for uploads. Plus the tech said he was able to do 300+ and that I should get much more than 41.

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1 day ago

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XfinityBenjaminM

Official Employee

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2.7K Messages

7 hours ago

 

brianph1 Hello! Thank you for reaching out to us here on our Community Forum. Are you noticing the speed is closer to the subscribed speeds when you are using a wired connection, or is there no noticeable difference?

 

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brianph1

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@XfinityBenjaminM​  - there is no difference between my last modem (822G) and this one, and I have measured wireless and wired, still maxed-out at 41Mbps upstream according to speedtest. I was expecting more since this is DOCSIS 3.1 versus 3.0. My subscribed speed is 2Gig/300M, even if I got 100 I'd be happy.

Thanks,

-Brian

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5 hours ago

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XfinityMatthew

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1.5K Messages

Let's take a look at everything on the account and address to see if there is something we can point to that may be causing you not to get the subscribed speeds. Please send us a direct message with your full name and the service address to get started.

To send a "Direct Message" to Xfinity Support: 
Click "Sign In" if necessary 
Click the "Direct Messaging" icon 
Click the "New message" (pencil and paper) icon 
The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there 
- As you are typing a drop-down list appears. Select "Xfinity Support" from that list 
- An "Xfinity Support" graphic replaces the "To:" line 
Type your message in the text area near the bottom of the window 
Press Enter to send it. 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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5 hours ago

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EG

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116.2K Messages

5 hours ago

@brianph1 @XfinityBenjaminM 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

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