CVE-2024-22366: Active debug code exists in Yamaha wireless LAN access point devices

Q: How do I fix CVE-2024-22366?

wlx222 firmware: upgrade to 24.00.04; wlx413 firmware: upgrade to 22.00.06; wlx212 firmware: upgrade to 21.00.13. Exact commands for each OS are on this page.

Q: Is CVE-2024-22366 being exploited?

CVE-2024-22366 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-2024-22366 affect?

CVE-2024-22366 affects wlx222 firmware, wlx413 firmware, wlx212 firmware. Severity is medium (CVSS 6.8). Active debug code exists in Yamaha wireless LAN access point devices. If a logged-in user who knows how to use the debug function accesses the device's management page, this function can be enabled by performing specific operations. As a re

Q: How urgent is CVE-2024-22366?

Priority 30/100. No elevated risk signals yet.

Routine

MEDIUM 6.8UPGRADEUPGRADEUPGRADE

CVE-2024-22366 is a medium-severity flaw (CVSS 6.8) affecting wlx222 firmware, wlx413 firmware, wlx212 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Active debug code exists in Yamaha wireless LAN access point devices. If a logged-in user who knows how to use the debug function accesses the device's management page, this function can be enabled by performing specific operations. As a result, an arbitrary OS command may be executed and/or configuration settings of the device may be altered. Affected products and versions are as follows: WLX222 firmware Rev.24.00.03 and earlier, WLX413 firmware

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-01-24
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2024-01-24 05:15 UTCPublished CVE record published
2026-06-17 07:11 UTCUpdated Record last modified

yamaha wlx222 firmware UPGRADE

Affected: < 24.00.04

Fixed in: 24.00.04

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.

yamaha wlx413 firmware UPGRADE

Affected: < 22.00.06

Fixed in: 22.00.06

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.

yamaha wlx212 firmware UPGRADE

Affected: < 21.00.13

Fixed in: 21.00.13

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.

yamaha wlx313 firmware UPGRADE

Affected: < 18.00.13

Fixed in: 18.00.13

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.

yamaha wlx202 firmware UPGRADE

Affected: < 16.00.19

Fixed in: 16.00.19

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-2024-22366?

wlx222 firmware: upgrade to 24.00.04; wlx413 firmware: upgrade to 22.00.06; wlx212 firmware: upgrade to 21.00.13. Exact commands for each OS are on this page.

Is CVE-2024-22366 being exploited?

CVE-2024-22366 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-2024-22366 affect?

CVE-2024-22366 affects wlx222 firmware, wlx413 firmware, wlx212 firmware. Severity is medium (CVSS 6.8). Active debug code exists in Yamaha wireless LAN access point devices. If a logged-in user who knows how to use the debug function accesses the device's management page, this function can be enabled by performing specific operations. As a re

How urgent is CVE-2024-22366?

Priority 30/100. No elevated risk signals yet.

References

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