CVE-2020-5634

Name: CVE-2020-5634
Creator: NVD / NIST
Published: 2020-10-06T06:15:12.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2020-5634 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. ELECOM LAN routers (WRC-2533GST2 firmware versions prior to v1.14, WRC-1900GST2 firmware versions prior to v1.14, WRC-1750GST2 firmware versions prior to v1.14, and WRC-1167GST2 firmware versions prior to v1.10) allow an attacker on the same network segment to execute arbitrary OS commands with a root privilege via unspecified vectors.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

ELECOM LAN routers (WRC-2533GST2 firmware versions prior to v1.14, WRC-1900GST2 firmware versions prior to v1.14, WRC-1750GST2 firmware versions prior to v1.14, and WRC-1167GST2 firmware versions prior to v1.10) allow an attacker on the same network segment to execute arbitrary OS commands with a root privilege via unspecified vectors.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.61%

44.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Elecom	Wrc-2533gst2 Firmware	< 1.14
Elecom	Wrc-1900gst2 Firmware	< 1.14
Elecom	Wrc-1750gst2 Firmware	< 1.14
Elecom	Wrc-1167gst2 Firmware	< 1.10

References

https://jvn.jp/en/jp/JVN82892096/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20201005-01/Vendor Advisory
https://jvn.jp/en/jp/JVN82892096/index.htmlThird Party Advisory
https://www.elecom.co.jp/news/security/20201005-01/Vendor Advisory

Timeline

Published: Oct 6, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5634?

How severe is CVE-2020-5634?

CVE-2020-5634 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5634?

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-2020-5634?

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

Scan your code now

Source: NVD / NIST