CVE-2026-11733: Buffer overflow vulnerability in some NETGEAR Nighthawk routers

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-11 · updated 2026-10-23
Weakness: CWE-121

Description

A buffer overflow vulnerability in the listed NETGEAR models allows a device administrator to temporarily interrupt the normal operation of the affected device.

Affected products

NETGEAR Rax41 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax41V2 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax42 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax42V2 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
Netgear RAX43: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax43V2 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax49S Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax50 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax50V2 Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax54S Firmware: before 1.1.6.36 — fixed in 1.1.6.36
NETGEAR Rax54Sv2 Firmware: before 1.1.6.36 — fixed in 1.1.6.36

How to fix

Upgrade to a fixed version: NETGEAR Rax41 Firmware 1.1.6.36; NETGEAR Rax41V2 Firmware 1.1.6.36; NETGEAR Rax42 Firmware 1.1.6.36; NETGEAR Rax42V2 Firmware 1.1.6.36; Netgear RAX43 1.1.6.36; NETGEAR Rax43V2 Firmware 1.1.6.36; NETGEAR Rax49S Firmware 1.1.6.36; NETGEAR Rax50 Firmware 1.1.6.36; NETGEAR Rax50V2 Firmware 1.1.6.36; NETGEAR Rax54S Firmware 1.1.6.36; NETGEAR Rax54Sv2 Firmware 1.1.6.36. Check the vendor advisory for mitigations.

References

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