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.

Affected Software

39 affected components
Netgear NETGEAR Nighthawk routers
All of the following
Netgear Rax20 Firmware
Netgear RAX20
All of the following
Netgear Rax35v2 Firmware<1.0.16.132
Netgear RAX35v2
All of the following
Netgear Rax41 Firmware
Netgear RAX41
All of the following
Netgear Rax41v2 Firmware<1.1.4.28
Netgear RAX41v2
All of the following
Netgear Rax42 Firmware
Netgear RAX42
All of the following
Netgear Rax42v2 Firmware<1.1.4.28
Netgear RAX42v2
All of the following
Netgear Rax43 Firmware<1.0.16.132
Netgear RAX43
All of the following
Netgear Rax43v2 Firmware<1.1.4.28
Netgear RAX43v2
All of the following
Netgear Rax45 Firmware
Netgear RAX45
All of the following
Netgear Rax49s Firmware<1.1.4.28
Netgear RAX49S
All of the following
Netgear Rax50 Firmware<1.0.16.132
Netgear RAX50
All of the following
Netgear Rax50s Firmware
Netgear Rax50s
All of the following
Netgear Rax50v2 Firmware<1.1.4.28
Netgear RAX50v2
All of the following
Netgear Rax54sv2 Firmware<1.1.4.28
Netgear RAX54Sv2
All of the following
Netgear Rax54v2 Firmware<1.1.4.28
Netgear Rax54v2
All of the following
Netgear Raxe450 Firmware
Netgear RAXE450
All of the following
Netgear Raxe500 Firmware<1.2.14.114
Netgear RAXE500
All of the following
Netgear Xr1000 Firmware<1.1.0.22
Netgear XR1000
All of the following
Netgear Xr1000v2 Firmware<1.1.0.22
Netgear XR1000v2

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
Data Sourced
via NVD·04:17 PM
DescriptionSeverityWeaknessAffected Software

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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