CVE-2021-20173 Command injection in Netgear Nighthawk R6700

High 8.8 Published 30 Dec 2021 Updated 3 Aug 2024

Attackers can execute arbitrary commands on Netgear Nighthawk R6700 routers by exploiting a command injection flaw in the update functionality via the SOAP interface.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-20173?

CVE-2021-20173 is a high-severity command injection vulnerability in Netgear R6700 Firmware, published on 30 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-78

Which versions are affected by CVE-2021-20173?

It affects 1 product.

Products include Netgear R6700 Firmware.

How do I fix CVE-2021-20173?

No fix has been published for CVE-2021-20173 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-20173 being exploited?

There is no known exploitation of CVE-2021-20173 in the wild and no public exploit code.

All Netgear R6700 Firmware vulnerabilities

Sources

Also known as GHSA-x3v5-8924-rm83.