CVE-2026-73673 | Netis NC63 Router up to 3.0.0.3327 Firmware Update /cgi-bin/upload_fw.cgi missing authentication

A vulnerability was found in Netis NC63 Router up to 3.0.0.3327. It has been classified as very critical. Affected by this issue is some unknown functionality of the file /cgi-bin/upload_fw.cgi of the component Firmware Update Handler. The manipulation leads to missing authentication.

This vulnerability is uniquely identified as CVE-2026-73673. The attack is possible to be carried out remotely. No exploit exists.