---
id: CVE-2026-76858
title: >-
  Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting
  vulnerability in ddns_wan_list_show.cgi caused by unsafe eval() handling of
  DDNS data
summary: >-
  Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting
  vulnerability in ddns_wan_list_show.cgi caused by unsafe eval() handling of
  DDNS data. Attackers can inject malicious script through the DDNS
  configuration path, l…
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: Netcore
product: NR255-V
affected:
  - NR255-V 1.5.130703
published: '2026-09-15'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T20:21:01.047'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76858'
references:
  - url: >-
      https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-ddns-stored-xss.md
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-stored-cross-site-scripting-via-ddns-eval-in-ddns-wan-list-show-cgi
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T19:05:58.226989Z'
ingestedAt: '2026-09-15T22:45:31.287Z'
epss: 0.0028
epssPercentile: 0.20653
---

## Overview

Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in ddns_wan_list_show.cgi caused by unsafe eval() handling of DDNS data. Attackers can inject malicious script through the DDNS configuration path, leading to persistent execution when the affected page is viewed.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.