---
id: CVE-2025-62775
title: >-
  Mercku M6a devices through 2.1.0 allow root TELNET logins via the web admin
  password.
summary: >-
  Mercku M6a devices through 2.1.0 allow root TELNET logins via the web admin
  password.
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-669
published: '2025-10-22'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-62775'
references:
  - url: 'https://blog.nullvoid.me/posts/mercku-exploits/'
    label: cve@mitre.org
  - url: 'https://seclists.org/fulldisclosure/2025/Oct/10'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00279
epssPercentile: 0.18675
ingestedAt: '2026-10-08T11:31:27.480Z'
---

## Overview

Mercku M6a devices through 2.1.0 allow root TELNET logins via the web admin password.

## Remediation

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