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CVE-2022-21173

HIGH
8.8
CVSS Score
Published: February 8, 2022 at 10:30 AM UTC
Updated: June 17, 2026 at 04:25 AM UTC
16 products affected across 1 vendorWrh 300LB3 S FirmwareWrh 300WH3 FirmwareWrh 300PN3 S Firmware

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Wrh 300BK3 Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300bk3 (same device)
Wrh 300BK3 S Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300bk3-s (same device)
Wrh 300DR3 S Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300dr3-s (same device)
Wrh 300LB3 S Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300lb3-s (same device)
Wrh 300PN3 S Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300pn3-s (same device)
Wrh 300WH3 Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300wh3 (same device)
Wrh 300WH3 S Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300wh3-s (same device)
Wrh 300YG3 S Firmware· Elecom
95%
v ≤ 1.05
elecom-wrh-300yg3-s (same device)
Wrh-300Bk3· Elecomdevice
80%
All versions
Wrh-300Bk3-S· Elecomdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN17482543/index.html
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.elecom.co.jp/news/security/20220208-02/

CVSS

8.8HIGH[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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