CVE-2021-20649
MEDIUMCVSS 4.8/10EPSS 0.33%
Last modified
CVE-2021-20649 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. EPSS estimates a 0.33% chance of exploitation in the next 30 days.
Description
ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elecom | Wrc-300febk-S Firmware | All versions |
References
- https://jvn.jp/en/jp/JVN47580234/index.htmlThird Party Advisory
- https://www.elecom.co.jp/news/security/20210126-01/Vendor Advisory
- https://jvn.jp/en/jp/JVN47580234/index.htmlThird Party Advisory
- https://www.elecom.co.jp/news/security/20210126-01/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20649?
ELECOM WRC-300FEBK-S contains an improper certificate validation vulnerability. Via a man-in-the-middle attack, an attacker may alter the communication response. As a result, an arbitrary OS command may be executed on the affected device.
How severe is CVE-2021-20649?
CVE-2021-20649 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20649?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20649?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST