CVE-2021-20739
Last modified
CVE-2021-20739 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. WRC-300FEBK, WRC-F300NF, WRC-733FEBK, WRH-300RD, WRH-300BK, WRH-300SV, WRH-300WH, WRH-H300WH, WRH-H300BK, WRH-300BK-S, and WRH-300WH-S all versions allows an unauthenticated network-adjacent attacker to execute an arbitrary OS command via unspecified vectors.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.
Description
WRC-300FEBK, WRC-F300NF, WRC-733FEBK, WRH-300RD, WRH-300BK, WRH-300SV, WRH-300WH, WRH-H300WH, WRH-H300BK, WRH-300BK-S, and WRH-300WH-S all versions allows an unauthenticated network-adjacent attacker to execute an arbitrary OS command via unspecified vectors.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elecom | Wrc-300febk Firmware | All versions |
| Elecom | Wrc-F300nf Firmware | All versions |
| Elecom | Wrc-733febk Firmware | All versions |
| Elecom | Wrh-300rd Firmware | All versions |
| Elecom | Wrh-300bk Firmware | All versions |
| Elecom | Wrh-300sv Firmware | All versions |
| Elecom | Wrh-300wh Firmware | All versions |
| Elecom | Wrh-H300wh Firmware | All versions |
| Elecom | Wrh-H300bk Firmware | All versions |
| Elecom | Wrh-300bk-S Firmware | All versions |
| Elecom | Wrh-300wh-S Firmware | All versions |
References
- https://jvn.jp/en/vu/JVNVU94260088/index.htmlThird Party Advisory
- https://www.elecom.co.jp/news/security/20210706-01/Vendor Advisory
- https://jvn.jp/en/vu/JVNVU94260088/index.htmlThird Party Advisory
- https://www.elecom.co.jp/news/security/20210706-01/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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