CVE-2022-4390

CRITICALCVSS 10/10EPSS 0.90%

Last modified

CVE-2022-4390 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
10/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Probability
0.90%

55.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
NetgearAx2400 Firmware< 1.0.9.90

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-4390?
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.
How severe is CVE-2022-4390?
CVE-2022-4390 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.
How do I fix CVE-2022-4390?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-4390?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST