CVE-2022-21173

Name: CVE-2022-21173
Creator: NVD / NIST
Published: 2022-02-08T11:15:07.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2022-21173 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Hidden functionality vulnerability in ELECOM LAN routers (WRH-300BK3 firmware v1.05 and earlier, WRH-300WH3 firmware v1.05 and earlier, WRH-300BK3-S firmware v1.05 and earlier, WRH-300DR3-S firmware v1.05 and earlier, WRH-300LB3-S firmware v1.05 and earlier, WRH-300PN3-S firmware v1.05 and earlier, WRH-300WH3-S firmware v1.05 and earlier, and WRH-300YG3-S firmware v1.05 and earlier) allows an attacker on the adjacent network to execute an arbitrary OS command via unspecified vectors.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

Hidden functionality vulnerability in ELECOM LAN routers (WRH-300BK3 firmware v1.05 and earlier, WRH-300WH3 firmware v1.05 and earlier, WRH-300BK3-S firmware v1.05 and earlier, WRH-300DR3-S firmware v1.05 and earlier, WRH-300LB3-S firmware v1.05 and earlier, WRH-300PN3-S firmware v1.05 and earlier, WRH-300WH3-S firmware v1.05 and earlier, and WRH-300YG3-S firmware v1.05 and earlier) allows an attacker on the adjacent network to execute an arbitrary OS command via unspecified vectors.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.44%

35.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Elecom	Wrh-300bk3 Firmware	<= 1.05
Elecom	Wrh-300wh3 Firmware	<= 1.05
Elecom	Wrh-300bk3-S Firmware	<= 1.05
Elecom	Wrh-300wh3-S Firmware	<= 1.05
Elecom	Wrh-300lb3-S Firmware	<= 1.05
Elecom	Wrh-300pn3-S Firmware	<= 1.05
Elecom	Wrh-300yg3-S Firmware	<= 1.05
Elecom	Wrh-300dr3-S Firmware	<= 1.05

References

https://jvn.jp/en/jp/JVN17482543/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20220208-02/Vendor Advisory
https://jvn.jp/en/jp/JVN17482543/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20220208-02/Vendor Advisory

Timeline

Published: Feb 8, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21173?

How severe is CVE-2022-21173?

CVE-2022-21173 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21173?

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-2022-21173?

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

Scan your code now

Source: NVD / NIST