CVE-2022-27647 Command injection in R6700v3

High 8.0 Published 29 Mar 2023 Updated 18 Feb 2025

Network-adjacent attackers can execute arbitrary code as root on NETGEAR R6700v3 routers via improper input validation in libreadycloud.so.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-27647?

CVE-2022-27647 is a high-severity command injection vulnerability in Netgear R6400 Firmware, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of the name or email field provided to libreadycloud.so. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15874.

Weakness: CWE-78

Which versions are affected by CVE-2022-27647?

It affects 33 products.

Products include Netgear Cax80 Firmware, Netgear Lax20 Firmware, Netgear Mr60 Firmware, Netgear Mr80 Firmware, Netgear Ms60 Firmware, Netgear Ms80 Firmware and 27 more.

How do I fix CVE-2022-27647?

No fix has been published for CVE-2022-27647 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-2022-27647 being exploited?

There is no known exploitation of CVE-2022-27647 in the wild and no public exploit code.

All Netgear R6400 Firmware vulnerabilities

Sources

Also known as GHSA-7pr7-x6mw-h647.