---
id: CVE-2026-76854
title: >-
  Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure
  vulnerability in l7_web_auth_user_show.cgi related to captive-portal
  credential handling
summary: >-
  Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure
  vulnerability in l7_web_auth_user_show.cgi related to captive-portal
  credential handling. Attackers can query this component to obtain
  captive-portal user cre…
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: '2026-09-17T20:18:15.620'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76854'
references:
  - url: >-
      https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-captive-portal-cred-disclosure.md
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-sensitive-information-disclosure-via-l7-web-auth-user-show-cgi
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T19:16:28.821538Z'
epss: 0.00391
epssPercentile: 0.30522
ingestedAt: '2026-09-15T22:45:31.285Z'
---

## Overview

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in l7_web_auth_user_show.cgi related to captive-portal credential handling. Attackers can query this component to obtain captive-portal user credentials, compromising confidentiality of authenticated network access.

## Remediation

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