---
id: CVE-2026-75167
title: >-
  A broken access control vulnerability in the ugw-usr-edit method of
  /cgi-bin/wwwugw.cgi in MBS-Solutions X-Serie Gateway firmware V6_00_05 allows
  a remote authenticated user with the low-privileged Standard role to change
  the password of…
summary: >-
  A broken access control vulnerability in the ugw-usr-edit method of
  /cgi-bin/wwwugw.cgi in MBS-Solutions X-Serie Gateway firmware V6_00_05 allows
  a remote authenticated user with the low-privileged Standard role to change
  the password of…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-284
published: '2026-09-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T14:17:09.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75167'
references:
  - url: 'https://en.mbs-solutions.de/mbs'
    label: cve@mitre.org
  - url: 'https://en.mbs-solutions.de/xserie'
    label: cve@mitre.org
  - url: >-
      https://github.com/SilviaMun/vulnerability-research/tree/main/CVE-2026-75167
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T13:16:32.956778Z'
epss: 0.003
epssPercentile: 0.22877
ingestedAt: '2026-09-14T15:23:07.413Z'
---

## Overview

A broken access control vulnerability in the ugw-usr-edit method of /cgi-bin/wwwugw.cgi in MBS-Solutions X-Serie Gateway firmware V6_00_05 allows a remote authenticated user with the low-privileged Standard role to change the password of arbitrary accounts.

## Remediation

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