CVE-2021-20650

Name: CVE-2021-20650
Creator: NVD / NIST
Published: 2021-02-12T07:15:15.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2021-20650 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Cross-site request forgery (CSRF) vulnerability in ELECOM NCC-EWF100RMWH2 allows remote attackers to hijack the authentication of administrators and execute an arbitrary request via unspecified vector. As a result, the device settings may be altered and/or telnet daemon may be started.. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

Cross-site request forgery (CSRF) vulnerability in ELECOM NCC-EWF100RMWH2 allows remote attackers to hijack the authentication of administrators and execute an arbitrary request via unspecified vector. As a result, the device settings may be altered and/or telnet daemon may be started.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS Probability

0.50%

38.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Elecom	Ncc-Ewf100rmwh2 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: Feb 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20650?

How severe is CVE-2021-20650?

CVE-2021-20650 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20650?

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.

Are you affected by CVE-2021-20650?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST