CVE-2021-37384

Name: CVE-2021-37384
Creator: NVD / NIST
Published: 2023-07-17T21:15:09.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.38%

Last modified Jun 17, 2026

CVE-2021-37384 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. RCE (Remote Code Execution) vulnerability was found in some Furukawa ONU models, this vulnerability allows remote unauthenticated users to send arbitrary commands to the device via web interface.. EPSS estimates a 1.38% chance of exploitation in the next 30 days.

Description

RCE (Remote Code Execution) vulnerability was found in some Furukawa ONU models, this vulnerability allows remote unauthenticated users to send arbitrary commands to the device via web interface.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.38%

68.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Furukawa	423-41w\/Ac Firmware	< 1.2.0
Furukawa	Ld421-21w Firmware	< 1.5.0
Furukawa	Ld420-10r Firmware	< 1.4.0
Furukawa	Ld421-21wv Firmware	< 1.5.0

References

Timeline

Published: Jul 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37384?

RCE (Remote Code Execution) vulnerability was found in some Furukawa ONU models, this vulnerability allows remote unauthenticated users to send arbitrary commands to the device via web interface.

How severe is CVE-2021-37384?

CVE-2021-37384 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.38% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37384?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37384?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST