CVE-2024-30219

Authenticated unintended operations via active debug function

Published Apr 15, 2024 · Updated Aug 27, 2025

Active debug code in MZK-MF300N all versions and MZK-MF300HP2 1.18 and earlier allows remote authenticated users to perform unintended operations. The management page exposes a vendor debug function to logged-in users, but PLANEX and JPCERT/CC have not published its endpoint or underlying operation. Exploitation requires device-management credentials, adjacent-network access, and knowledge of the debug function; published impacts include unauthorized reading, modification, and service interruption.

CVSS severity6.8
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Active debug code in MZK-MF300N all versions and MZK-MF300HP2 1.18 and earlier allows remote authenticated users to perform unintended operations. The management page exposes a vendor debug function to logged-in users, but PLANEX and JPCERT/CC have not published its endpoint or underlying operation. Exploitation requires device-management credentials, adjacent-network access, and knowledge of the debug function; published impacts include unauthorized reading, modification, and service interruption.

The record

CVE
CVE-2024-30219
Published
Apr 15, 2024
Updated
Aug 27, 2025
Vendor
PLANEX COMMUNICATIONS INC.
Product
MZK-MF300N
Classifications
CWE-489, T1210
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=all firmware versions

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

PLANEX COMMUNICATIONS INC. · MZK-MF300Nversion=all firmware versions
PLANEX COMMUNICATIONS INC. · MZK-MF300N Firmwareversion=0 <*
PLANEX COMMUNICATIONS INC. · MZK-MF300HP2version=firmware versions 1.18 and earlier

Published CVSS scores

6.8JPCERT/CCCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-489Active Debug Code
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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