Is CVE-2021-20174 actively exploited?

No active exploitation of CVE-2021-20174 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-20174 be exploited remotely?

Yes. CVE-2021-20174 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-20174?

CVE-2021-20174 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2021-20174

HIGH

CVE-2021-20174

CWE-319Published: December 30, 2021· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

Netgear Nighthawk R6700 version 1.0.4.120 does not utilize secure communication methods to the web interface. By default, all communication to/from the device's web interface is sent via HTTP, which causes potentially sensitive information (such as usernames and passwords) to be transmitted in cleartext.

NVD Source

Technical Analysis

CVE-2021-20174 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.