---
id: CVE-2026-75160
title: >-
  An issue in X-Serie Gateway Firmware V6_00_05 allows a remote attacker to
  escalate privileges via the endpoints /cgi-bin/wwwugw.cgi and
  /cgi-bin/ugwdownload.cgi.
summary: >-
  An issue in X-Serie Gateway Firmware V6_00_05 allows a remote attacker to
  escalate privileges via the endpoints /cgi-bin/wwwugw.cgi and
  /cgi-bin/ugwdownload.cgi.
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-269
published: '2026-09-04'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:42:20.313'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75160'
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-2026-75160
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00602
epssPercentile: 0.46508
ingestedAt: '2026-09-08T20:10:03.166Z'
---

## Overview

An issue in X-Serie Gateway Firmware V6_00_05 allows a remote attacker to escalate privileges via the endpoints /cgi-bin/wwwugw.cgi and /cgi-bin/ugwdownload.cgi.

## Remediation

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