Hidden functionality vulnerability in ELECOM LAN routers (WRH-300BK3 firmware v1.05 and…
Priority LOW 38Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00447 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ELECOM CO.,LTD. | 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 | — | No fix listed | CNA |
- ELECOM LAN routers VendorELECOM CO.,LTD. Affected 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 Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:elecom:wrh-300bk3_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300bk3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
| cpe:2.3:o:elecom:wrh-300wh3_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300wh3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
| cpe:2.3:o:elecom:wrh-300bk3-s_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300bk3-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
| cpe:2.3:o:elecom:wrh-300wh3-s_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300wh3-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
| cpe:2.3:o:elecom:wrh-300lb3-s_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300lb3-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
- cpe:2.3:o:elecom:wrh-300bk3_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300bk3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
- cpe:2.3:o:elecom:wrh-300wh3_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300wh3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
- cpe:2.3:o:elecom:wrh-300bk3-s_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300bk3-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
- cpe:2.3:o:elecom:wrh-300wh3-s_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300wh3-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
- cpe:2.3:o:elecom:wrh-300lb3-s_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300lb3-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:elecom:wrh-300pn3-s_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300pn3-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
| cpe:2.3:o:elecom:wrh-300yg3-s_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300yg3-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
| cpe:2.3:o:elecom:wrh-300dr3-s_firmware:*:*:*:*:*:*:*:* | up to 1.05 | Vulnerable | ELECOM CO.,LTD. |
| cpe:2.3:h:elecom:wrh-300dr3-s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | ELECOM CO.,LTD. |
- cpe:2.3:o:elecom:wrh-300pn3-s_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300pn3-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
- cpe:2.3:o:elecom:wrh-300yg3-s_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300yg3-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
- cpe:2.3:o:elecom:wrh-300dr3-s_firmware:*:*:*:*:*:*:*:* Versions up to 1.05 Vulnerable ·ELECOM CO.,LTD.
- cpe:2.3:h:elecom:wrh-300dr3-s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ELECOM CO.,LTD.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-21173
- 2026-10-03 Alias added: GHSA-4xq4-ppq9-6vrh
References
Sources
- CVE-2022-21173 · CVE Program
- CVE-2022-21173 · NVD
- FIRST EPSS
- GHSA-4xq4-ppq9-6vrh · GitHub Advisory Database · CC BY 4.0
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