---
id: CVE-2025-62777
title: >-
  Use of Hard-Coded Credentials issue exists in MZK-DP300N version 1.07 and
  earlier, which may allow an attacker within the local network to log in to the
  affected device via Telnet and execute arbitrary commands.
summary: >-
  Use of Hard-Coded Credentials issue exists in MZK-DP300N version 1.07 and
  earlier, which may allow an attacker within the local network to log in to the
  affected device via Telnet and execute arbitrary commands.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-798
published: '2025-10-28'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-62777'
references:
  - url: 'https://jvn.jp/en/jp/JVN00021602/'
    label: vultures@jpcert.or.jp
  - url: 'https://www.planex.co.jp/products/mzk-dp300n/'
    label: vultures@jpcert.or.jp
tags:
  - nvd
epss: 0.00272
epssPercentile: 0.17904
ingestedAt: '2026-10-08T11:31:27.659Z'
---

## Overview

Use of Hard-Coded Credentials issue exists in MZK-DP300N version 1.07 and earlier, which may allow an attacker within the local network to log in to the affected device via Telnet and execute arbitrary commands.

## Remediation

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