CVE-2024-30220: Command injection vulnerability in PLANEX COMMUNICATIONS wireless LAN routers allows a network-adjacent unauth

Q: How do I fix CVE-2024-30220?

mzk-mf300n firmware: mitigate or apply the listed mitigation; mzk-mf300hp2 firmware: upgrade to newer than 1.18. Exact commands for each OS are on this page.

Q: Is CVE-2024-30220 being exploited?

CVE-2024-30220 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-30220 affect?

CVE-2024-30220 affects mzk-mf300n firmware, mzk-mf300hp2 firmware. Severity is high (CVSS 8.8). Command injection vulnerability in PLANEX COMMUNICATIONS wireless LAN routers allows a network-adjacent unauthenticated attacker to execute an arbitrary command by sending a specially crafted request to a certain port. Note that MZK-MF300N

This month

HIGH 8.8MITIGATEUPGRADE

CVE-2024-30220 is a high-severity flaw (CVSS 8.8) affecting mzk-mf300n firmware, mzk-mf300hp2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Command injection vulnerability in PLANEX COMMUNICATIONS wireless LAN routers allows a network-adjacent unauthenticated attacker to execute an arbitrary command by sending a specially crafted request to a certain port. Note that MZK-MF300N is no longer supported, therefore the update for this product is not provided.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-77
Published	2024-04-15
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: planex

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-04-15 11:15 UTCPublished CVE record published
2026-06-17 07:26 UTCUpdated Record last modified

planex mzk-mf300n firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

planex mzk-mf300hp2 firmware UPGRADE

Affected: <= 1.18

Fixed in: newer than 1.18

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-30220?

mzk-mf300n firmware: mitigate or apply the listed mitigation; mzk-mf300hp2 firmware: upgrade to newer than 1.18. Exact commands for each OS are on this page.

Is CVE-2024-30220 being exploited?

CVE-2024-30220 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-30220 affect?

CVE-2024-30220 affects mzk-mf300n firmware, mzk-mf300hp2 firmware. Severity is high (CVSS 8.8). Command injection vulnerability in PLANEX COMMUNICATIONS wireless LAN routers allows a network-adjacent unauthenticated attacker to execute an arbitrary command by sending a specially crafted request to a certain port. Note that MZK-MF300N

How urgent is CVE-2024-30220?

Priority 47/100. High severity

Related CVEs

CVE-2024-30219 MEDIUM 6.8 MITIGATE UPGRADE Active debug code vulnerability exists in PLANEX COMMUNICATIONS wireless LAN routers

References

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