CVE-2026-76867

MEDIUM 5.4

Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting in Route/NAT Configuration CGI Handlers

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

Netcore NR255-V firmware version 1.5.130703 contains a stored cross-site scripting vulnerability in routing and NAT configuration CGI components including routing_tab_add_cgi, routing_table_list_show_cgi, route_policy_add_cgi, and route_policy_parame_show_cgi. Attackers can inject persistent script payloads through these route and NAT configuration pages, which are then executed in the context of users viewing the affected pages.

CWE	CWE-79
Vendor	netcore
Product	nr255-v
Published	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

Netcore / NR255-V

1.5.130703

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-route-nat-stored-xss.md vulncheck.com: https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-stored-cross-site-scripting-in-route-nat-configuration-cgi-handlers

Credits

Zhou Ao Yin Luxing Jiang Yuxuan Liu Xin @Nebusec