CVE-2021-20639

Name: CVE-2021-20639
Creator: NVD / NIST
Published: 2021-02-12T07:15:14.733+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2021-20639 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute arbitrary OS commands via unspecified vectors.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute arbitrary OS commands via unspecified vectors.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

0.45%

35.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Logitech	Lan-W300n\/Pgrb Firmware	All versions

References

https://jvn.jp/en/jp/JVN96783542/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20210126-01/Vendor Advisory
https://jvn.jp/en/jp/JVN96783542/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-2021-20639?

LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute arbitrary OS commands via unspecified vectors.

How severe is CVE-2021-20639?

CVE-2021-20639 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20639?

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-2021-20639?

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

Scan your code now

Source: NVD / NIST