CVE-2021-23147: NETGEAR r6700 Firmware

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• NETGEAR r6700 Firmware: version 1.0.4.120 only

Published 2021-12-30. Last modified 2026-06-17.