CVE-2022-27644 Security feature bypass in R6700v3

Medium 5.0 Published 29 Mar 2023 Updated 18 Feb 2025

Attackers can bypass HTTPS certificate validation to compromise downloaded data integrity and potentially execute arbitrary code on NETGEAR routers.

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

What is CVE-2022-27644?

CVE-2022-27644 is a medium-severity 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 compromise the integrity of downloaded information on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-15797.

Weakness: CWE-295

Which versions are affected by CVE-2022-27644?

It affects 24 products.

Products include Netgear Cbr40 Firmware, Netgear Lbr1020 Firmware, Netgear Lbr20 Firmware, Netgear R6400 Firmware, Netgear R6700 Firmware, Netgear R6900p Firmware and 18 more.

How do I fix CVE-2022-27644?

No fix has been published for CVE-2022-27644 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-27644 being exploited?

There is no known exploitation of CVE-2022-27644 in the wild and no public exploit code.

All Netgear R6400 Firmware vulnerabilities

Sources

Also known as GHSA-rvc6-cvq7-4g2q.