---
id: CVE-2026-76857
title: >-
  Netcore NR255-V firmware version 1.5.130703 contains a sensitive information
  disclosure vulnerability in the ddns_wan_list_show.cgi endpoint and related
  DDNSset_cgi, IGD_GetCgiHandler, and IGD_CgiCall components
summary: >-
  Netcore NR255-V firmware version 1.5.130703 contains a sensitive information
  disclosure vulnerability in the ddns_wan_list_show.cgi endpoint and related
  DDNSset_cgi, IGD_GetCgiHandler, and IGD_CgiCall components. Attackers who
  reach this…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-522
vendor: Netcore
product: NR255-V
affected:
  - NR255-V 1.5.130703
published: '2026-09-15'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T17:16:47.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76857'
references:
  - url: >-
      https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-ddns-cred-disclosure.md
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-plaintext-ddns-credential-disclosure-via-ddns-wan-list-show-cgi
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T16:53:04.837293Z'
epss: 0.0036
epssPercentile: 0.27008
ingestedAt: '2026-09-15T22:45:31.286Z'
---

## Overview

Netcore NR255-V firmware version 1.5.130703 contains a sensitive information disclosure vulnerability in the ddns_wan_list_show.cgi endpoint and related DDNSset_cgi, IGD_GetCgiHandler, and IGD_CgiCall components. Attackers who reach this CGI handler can obtain plaintext DDNS credentials, exposing sensitive account information.

## Remediation

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