TI-2026-53701 Aliases CVE-2026-76867 GHSA-r4gj-cj22-7v4x

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

LOW 23CWE-79Published 2026-09-15 · Updated 2026-09-17

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00235 14th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Netcore	NR255-V	1.5.130703	—	No fix listed	CNA

NR255-V VendorNetcore Affected 1.5.130703 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-76867
2026-10-03 Alias added: GHSA-r4gj-cj22-7v4x

References

Advisory 1

Netcore router public references: Stored Cross-site Scripting Across Route/NAT Configuration Pages via eval() and HTML Sinks

TI-2026-71052 Improper authentication in Netcore NR268 CGI Execution CVSS 4.0CRITICAL 10.0
TI-2026-65286 Netcore NAP930 Network Tools CGI network_tools eval os command injection CVSS 4.0CRITICAL 10.0
TI-2026-65110 Netcore NR289-GE boa_temp process_request missing authentication CVSS 4.0CRITICAL 10.0
TI-2026-65109 Netcore NR289-GE CGI set_ntp_server_ip.cgi system os command injection CVSS 4.0CRITICAL 10.0
TI-2026-65108 Netcore NR289-GE Location Time location_time.cgi system os command injection CVSS 4.0CRITICAL 10.0
TI-2026-65105 Netcore NR289-GE CGI ap_ip.cgi system os command injection CVSS 4.0CRITICAL 10.0

See all 60 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences