[Japanese]

JVNDB-2025-000095

MZK-DP300N uses hard-coded credentials

Overview

MZK-DP300N provided by PLANEX COMMUNICATIONS INC. contains the following vulnerability.
  • Use of hard-coded credentials (CWE-798) - CVE-2025-62777

Toshiki Iwasaki of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 8.8 (High) [IPA Score]
  • Attack Vector: Adjacent Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
Affected Products


PLANEX COMMUNICATIONS INC.
  • MZK-DP300N version 1.07 and earlier

Impact

An attacker within the local network could log in to the affected device via Telnet and execute arbitrary commands.
Solution

[Update the firmware]
Update the firmware to the latest version according to the information provided by the developer.
Vendor Information

PLANEX COMMUNICATIONS INC.
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2025-62777
References

  1. JVN : JVN#00021602
Revision History

  • [2025/10/28]
      Web page was published

Date Public2025/10/28
Date First Published2025/10/28
Date Last Updated2025/10/28