CVE-2021-23147 Auth bypass in Netgear Nighthawk R6700
Attackers with physical access can bypass authentication via UART to execute commands as root on Netgear Nighthawk 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-2021-23147?
CVE-2021-23147 is a medium-severity authentication bypass vulnerability in Netgear R6700 Firmware, published on 30 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Netgear Nighthawk R6700 version 1.0.4.120 does not have sufficient protections for the UART console. A malicious actor with physical access to the device is able to connect to the UART port via a serial connection and execute commands as the root user without authentication.
Weakness: CWE-287
Which versions are affected by CVE-2021-23147?
It affects 1 product.
Products include Netgear R6700 Firmware.
How do I fix CVE-2021-23147?
No fix has been published for CVE-2021-23147 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-23147 being exploited?
There is no known exploitation of CVE-2021-23147 in the wild and no public exploit code.
Other vulnerabilities in Netgear R6700 Firmware
Sources
Also known as GHSA-92gj-cjfc-w72m.