CVE-2026-76856: Netcore NR255-V

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Netcore NR255-V firmware version 1.5.130703 contains a cross-site request forgery vulnerability affecting the wan_config_set_cgi, wan_num_set_cgi, and lan_ip_change_cgi endpoints. Attackers can craft forged requests to trick authenticated administrators into modifying WAN or LAN network configuration settings without consent.

Affected products

• Netcore NR255-V: version 1.5.130703 only

Published 2026-09-15. Last modified 2026-09-21.