What is the severity of CVE-2021-20731?

The severity of CVE-2021-20731 is high with a severity value of 8.8.

Which firmware versions are affected by CVE-2021-20731?

CVE-2021-20731 affects WSR-1166DHP3 firmware Ver.1.16 and prior, as well as WSR-1166DHP4 firmware Ver.1.02 and prior.

How can an attacker exploit CVE-2021-20731?

An attacker can exploit CVE-2021-20731 to execute arbitrary OS commands with root privileges, although the specific vectors are unspecified.

Is Buffalo WSR-1166DHP4 firmware version 1.02 vulnerable to CVE-2021-20731?

Yes, Buffalo WSR-1166DHP4 firmware version 1.02 is vulnerable to CVE-2021-20731.

Where can I find more information about CVE-2021-20731?

You can find more information about CVE-2021-20731 at the following references: [https://jvn.jp/en/vu/JVNVU92862829/index.html](https://jvn.jp/en/vu/JVNVU92862829/index.html) and [https://www.buffalo.jp/news/detail/20210531-01.html](https://www.buffalo.jp/news/detail/20210531-01.html)

Vulnerability/
CVE-2021-20731

high

8.8

CWE

78 77

9/6/2021

3/8/2024

CVE-2021-20731: OS Command Injection

First published: Wed Jun 09 2021(Updated: )

WSR-1166DHP3 firmware Ver.1.16 and prior and WSR-1166DHP4 firmware Ver.1.02 and prior allow an attacker to execute arbitrary OS commands with root privileges via unspecified vectors.

Credit: vultures@jpcert.or.jp

Affected Software	Affected Version	How to fix
Buffalo WSR-1166DHP4	<=1.02
Buffalo WSR-1166DHP4
Buffalo WSR-1166DHP3 Firmware	<=1.16
Buffalo WSR-1166DHP3

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-20731?
The severity of CVE-2021-20731 is high with a severity value of 8.8.
Which firmware versions are affected by CVE-2021-20731?
CVE-2021-20731 affects WSR-1166DHP3 firmware Ver.1.16 and prior, as well as WSR-1166DHP4 firmware Ver.1.02 and prior.
How can an attacker exploit CVE-2021-20731?
An attacker can exploit CVE-2021-20731 to execute arbitrary OS commands with root privileges, although the specific vectors are unspecified.
Is Buffalo WSR-1166DHP4 firmware version 1.02 vulnerable to CVE-2021-20731?
Yes, Buffalo WSR-1166DHP4 firmware version 1.02 is vulnerable to CVE-2021-20731.
Where can I find more information about CVE-2021-20731?
You can find more information about CVE-2021-20731 at the following references: [https://jvn.jp/en/vu/JVNVU92862829/index.html](https://jvn.jp/en/vu/JVNVU92862829/index.html) and [https://www.buffalo.jp/news/detail/20210531-01.html](https://www.buffalo.jp/news/detail/20210531-01.html)

agent/references
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/severity
agent/last-modified-date
agent/weakness
agent/author
agent/description
agent/first-publish-date
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/buffalo
canonical/buffalo wsr-1166dhp4
version/buffalo wsr-1166dhp4/1.02
canonical/buffalo wsr-1166dhp3 firmware
version/buffalo wsr-1166dhp3 firmware/1.16
canonical/buffalo wsr-1166dhp3

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