CVE-2021-20173

Name: CVE-2021-20173
Creator: NVD / NIST
Published: 2021-12-30T22:15:09.76+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.20%

Last modified Jun 17, 2026

CVE-2021-20173 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Netgear Nighthawk R6700 version 1.0.4.120 contains a command injection vulnerability in update functionality of the device. By triggering a system update check via the SOAP interface, the device is susceptible to command injection via preconfigured values.. EPSS estimates a 3.20% chance of exploitation in the next 30 days.

Description

Netgear Nighthawk R6700 version 1.0.4.120 contains a command injection vulnerability in update functionality of the device. By triggering a system update check via the SOAP interface, the device is susceptible to command injection via preconfigured values.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

3.20%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Netgear	R6700 Firmware	1.0.4.120

References

https://www.tenable.com/security/research/tra-2021-57Exploit, Third Party Advisory
https://www.tenable.com/security/research/tra-2021-57Exploit, Third Party Advisory

Timeline

Published: Dec 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20173?

How severe is CVE-2021-20173?

CVE-2021-20173 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.20% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20173?

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-2021-20173?

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

Scan your code now

Source: NVD / NIST