Is CVE-2022-4390 actively exploited?

No active exploitation of CVE-2022-4390 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-4390 be exploited remotely?

Yes. CVE-2022-4390 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-4390?

CVE-2022-4390 has a CVSS score of 10.0 (CRITICAL).

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CRITICAL

CVE-2022-4390

NVD-CWE-OtherPublished: December 9, 2022· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official Description

A network misconfiguration is present in versions prior to 1.0.9.90 of the NETGEAR RAX30 AX2400 series of routers. IPv6 is enabled for the WAN interface by default on these devices. While there are firewall restrictions in place that define access restrictions for IPv4 traffic, these restrictions do not appear to be applied to the WAN interface for IPv6. This allows arbitrary access to any services running on the device that may be inadvertently listening via IPv6, such as the SSH and Telnet servers spawned on ports 22 and 23 by default. This misconfiguration could allow an attacker to interact with services only intended to be accessible by clients on the local network.

NVD Source

Technical Analysis

CVE-2022-4390 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.