Is CVE-2021-37384 in the CISA KEV catalog?

No. CVE-2021-37384 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-37384?

CVE-2021-37384 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-37384?

CVE-2021-37384 has an EPSS score of 1.38% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-37384?

Upgrade 423-41w\/ac firmware to 1.2.0 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-37384

CRITICAL

9.8

CVSS v3

NVD

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.

CWE-94Code Injection

How to fix

Remediation Available

423-41w\/ac firmwareNVD

Affected:< 1.2.0Fixed in:1.2.0CVE-2021-37384derived from NVD

ld420-10r firmwareNVD

Affected:< 1.4.0Fixed in:1.4.0CVE-2021-37384derived from NVD

ld421-21w firmwareNVD

Affected:< 1.5.0Fixed in:1.5.0CVE-2021-37384derived from NVD

ld421-21wv firmwareNVD

Affected:< 1.5.0Fixed in:1.5.0CVE-2021-37384derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.38%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Third-Party Advisory1

gist.githubusercontent.com

Other references3

Related Vulnerabilities

Other CWE-94 (Code Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-9841	Critical	9.8	100%	KEV	Fix
CVE-2015-1635	Critical	9.8	100%	KEV	-
CVE-2022-22954	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-22204	Medium	6.8	100%	KEV	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2012-0158	High	8.8	100%	KEV	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.