CVE-2026-0420: Missing TLS certificate validation in NETGEAR's ReadyCloud client app

Published Jun 9, 2026
·
Updated

An improper implementation of TLS certificate validation vulnerability found in NETGEAR's ReadyCloud client app which could allow an attacker to perform attacker-in-the-middle (MiTM) style attacks impacting the product's confidentiality. This vulnerability affects the listed NETGEAR models.

Affected Software

1 affected component
Netgear ReadyCLOUD client

Remediation

Information

Devices with automatic updates enabled may already have this patch applied. If not, please check the firmware version and update it to the latest. Fixed in: ProductFixed VersionRAX120v1 (EoS) V1.2.9.52 https://www.netgear.com/support/product/rax120v1 RAX120v2 Nighthawk AX12 12-Stream AX6000 WiFi Router V1.2.9.52 https://www.netgear.com/support/product/rax120v2/ RAX35 (EoS) Nighthawk AX4 4-Stream WiFi 6 Router V1.0.6.106 https://www.netgear.com/support/product/rax35/ RAX38 (EoS) Nighthawk AX4 4-Stream AX3000 WiFi Router V1.0.6.106 https://www.netgear.com/support/product/rax38/ RAX40 (EoS) Nighthawk AX4 4-Stream WiFi Router V1.0.6.106 https://www.netgear.com/support/product/rax40/ Models marked (EoS) have reached End-of-Support phase, and no security updates are planned. NETGEAR strongly recommends that you retire these devices and upgrade to a newer NETGEAR device for continued security support.

Event History

Jun 9, 2026
CVE Published
via MITRE·03:50 PM
Data Sourced
via MITRE·03:50 PM
RemedyDescriptionWeakness
Data Sourced
via NVD·05:17 PM
DescriptionSeverityWeakness
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-0420?

The severity of CVE-2026-0420 is assessed as medium with a CVSS score of 4.6.

2

How do I fix CVE-2026-0420?

To fix CVE-2026-0420, ensure your NETGEAR ReadyCloud client app is updated to the latest firmware version.

3

What is the risk associated with CVE-2026-0420?

CVE-2026-0420 presents a risk of potential attacker-in-the-middle (MiTM) attacks due to missing TLS certificate validation.

4

Which NETGEAR products are affected by CVE-2026-0420?

CVE-2026-0420 affects various NETGEAR models that utilize the ReadyCloud client app.

5

When was CVE-2026-0420 published?

CVE-2026-0420 was published on June 9, 2026.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203