CVE-2026-11736: Stack-based buffer overflow vulnerability in some NETGEAR Nighthawk routers

Published Aug 11, 2026
·
Updated

A stack-based buffer overflow vulnerability affects certain NETGEAR models allowing an authenticated admin user to make unauthorized modification to router software and functionality.

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade NETGEAR Nighthawk RAX35v2 to a version that resolves this vulnerability.

    Fixed in V1.0.16.132
  2. Upgrade

    Upgrade NETGEAR Nighthawk RAX41v2 to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  3. Upgrade

    Upgrade NETGEAR Nighthawk RAX42v2 to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  4. Upgrade

    Upgrade NETGEAR Nighthawk RAX43v2 to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  5. Upgrade

    Upgrade NETGEAR Nighthawk RAX49S to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  6. Upgrade

    Upgrade NETGEAR Nighthawk RAX50 to a version that resolves this vulnerability.

    Fixed in V1.0.16.132
  7. Upgrade

    Upgrade NETGEAR Nighthawk RAX50v2 to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  8. Upgrade

    Upgrade NETGEAR Nighthawk RAX54Sv2 to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  9. Upgrade

    Upgrade NETGEAR Nighthawk RAX54v2 to a version that resolves this vulnerability.

    Fixed in V1.1.4.28
  10. Upgrade

    Upgrade NETGEAR Nighthawk AXE500 to a version that resolves this vulnerability.

    Fixed in V1.2.14.114
  11. Upgrade

    Upgrade NETGEAR Nighthawk XR1000 to a version that resolves this vulnerability.

    Fixed in V1.1.0.22
  12. Upgrade

    Upgrade NETGEAR Nighthawk XR1000v2 to a version that resolves this vulnerability.

    Fixed in V1.1.0.22
  13. Compensating control

    For models marked (EoS) (RAX20 (EoS), RAX35v2 (EoS), RAX41 (EoS), RAX42 (EoS), RAX45 (EoS), RAX50S (EoS), RAXE450 (EoS)), retire these devices and upgrade to a newer NETGEAR device for continued security support.

Event History

Aug 11, 2026
CVE Published
via MITRE·03:06 PM
Data Sourced
via MITRE·03:06 PM
RemedyDescriptionWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2026-11736?

The severity of CVE-2026-11736 is rated at 50.

2

How do I fix CVE-2026-11736?

To fix CVE-2026-11736, update your NETGEAR Nighthawk router firmware to the latest version provided by NETGEAR.

3

What types of NETGEAR devices are affected by CVE-2026-11736?

CVE-2026-11736 affects specific models of NETGEAR Nighthawk routers.

4

What is a stack-based buffer overflow as described in CVE-2026-11736?

A stack-based buffer overflow in CVE-2026-11736 allows an authenticated user to overwrite memory, leading to unauthorized modifications.

5

Who is vulnerable to exploitation of CVE-2026-11736?

Authenticated admin users of affected NETGEAR Nighthawk routers are vulnerable to exploitation of CVE-2026-11736.

Company

Resources

Contact

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