CVE-2021-20731 — HIGH (8.8)

Q: What is CVE-2021-20731?

CVE-2021-20731 is a vulnerability with a CVSS score of 8.8 (HIGH). 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.

Q: How severe is CVE-2021-20731?

CVE-2021-20731 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-20731?

Check the references section above for vendor advisories and patch information. Affected products include: Buffalo Wsr-1166Dhp4 Firmware, Buffalo Wsr-1166Dhp4, Buffalo Wsr-1166Dhp3 Firmware, Buffalo Wsr-1166Dhp3.

Vulnerability Description

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.

CVSS Score

8.8

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Buffalo	Wsr-1166Dhp4 Firmware	<= 1.02
Buffalo	Wsr-1166Dhp4	-
Buffalo	Wsr-1166Dhp3 Firmware	<= 1.16
Buffalo	Wsr-1166Dhp3	-

Related Weaknesses (CWE)

CWE-78

References

https://jvn.jp/en/vu/JVNVU92862829/index.htmlThird Party Advisory
https://www.buffalo.jp/news/detail/20210531-01.htmlVendor Advisory
https://jvn.jp/en/vu/JVNVU92862829/index.htmlThird Party Advisory
https://www.buffalo.jp/news/detail/20210531-01.htmlVendor Advisory

FAQ

What is CVE-2021-20731?

CVE-2021-20731 is a vulnerability with a CVSS score of 8.8 (HIGH). 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.

How severe is CVE-2021-20731?

CVE-2021-20731 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20731?

Check the references section above for vendor advisories and patch information. Affected products include: Buffalo Wsr-1166Dhp4 Firmware, Buffalo Wsr-1166Dhp4, Buffalo Wsr-1166Dhp3 Firmware, Buffalo Wsr-1166Dhp3.