High severity8.1NVD Advisory· Published Sep 15, 2026· Updated Sep 21, 2026

CVE-2026-76856

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Netcore/NR255-Vllm-fuzzy
Range: 1.5.130703
Draw Ctf/Netcore Router Public Refsllm-fuzzy
Range: 1.5.130703

Patches

Vulnerability mechanics

References

github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-csrf-wan-reconfig.mdnvd
www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-cross-site-request-forgery-in-wan-lan-configuration-endpointsnvd

News mentions

Draw Ctf Netcore Routers: 24 Vulnerabilities Disclosed, Ranging from XSS to Firmware Exploits
Vypr Intelligence · Sep 15, 2026

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