CVE-2022-4390Public exploitNetwork attack vector

Internal service exposure via missing IPv6 WAN rules

Published Dec 9, 2022 · Updated Apr 14, 2025

Network misconfiguration in NETGEAR RAX30 firmware before 1.0.9.90 allows remote attackers to reach internal services over IPv6. The IPv6 firewall rules omit the WAN interface when it has only a link-local address, leaving web administration, SSH, Telnet, and other listeners reachable. Exposure requires access to the WAN network segment and an IPv6 path; the published demonstration reaches Telnet and uses a built-in support account to obtain a root shell.

CVSS severity10.0
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Network misconfiguration in NETGEAR RAX30 firmware before 1.0.9.90 allows remote attackers to reach internal services over IPv6. The IPv6 firewall rules omit the WAN interface when it has only a link-local address, leaving web administration, SSH, Telnet, and other listeners reachable. Exposure requires access to the WAN network segment and an IPv6 path; the published demonstration reaches Telnet and uses a built-in support account to obtain a root shell.

The record

CVE
CVE-2022-4390
Published
Dec 9, 2022
Updated
Apr 14, 2025
Vendor
NETGEAR
Product
RAX30
Classifications
T1133
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=NETGEAR Nighthawk WiFi6 Router prior to V1.0.9.90

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NETGEAR · RAX30version=NETGEAR Nighthawk WiFi6 Router prior to V1.0.9.90

Published CVSS scores

10.0CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
5.3TenableCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
10.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1133External Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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