N-450, Need a firmware update

[Wi-Fitty]

I've got a near 5 year old N-450 Cable Modem & Router. I just updated to Avast VPN, I've already had Avast Internet Security for years. It decided to do a network scan and found a problem. It said Vulnerability ID HNS-201510-01, please update your firmware. Since only my cable company can update my firmware (unless somebody here has a link to something better), I'm stuck at  v3.01.17 from Spectrum while Comcast & Cox are at v3.01.22. Seems this should have been detected & fixed years ago, but something slipped so it got detected today.

[FURRYe38]

You'll need to contact your ISP and have them push FW as most Cable ISP handle all FW updates to connected modems. Some ISPs don't update user bought modems FYI. 

You might consider getting into a newer generation modem. 

Good Luck.