CVE-2026-11734

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Authenticated Admin Buffer Overflow in NETGEAR Devices Causes Denial of Service

Publication date: 2026-08-11

Last updated on: 2026-08-28

Assigner: Netgear, Inc.

Description

A buffer overflow vulnerability in the listed NETGEAR models allows an authenticated admin user to cause the affected device to become temporarily unavailable.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-11

Last Modified

2026-08-28

Generated

2026-09-01

AI Q&A

2026-08-11

EPSS Evaluated

2026-08-30

NVD

CVE-2026-11734

EUVD

EUVD-2026-56191

Affected Vendors & Products

Vendor	Product	Version / Range
netgear	nighthawk_rax41	to 1.1.6.36 (inc)
netgear	nighthawk_rax41v2	to 1.1.6.36 (inc)
netgear	nighthawk_rax42	to 1.1.6.36 (inc)
netgear	nighthawk_rax42v2	to 1.1.6.36 (inc)
netgear	nighthawk_rax43	to 1.1.6.36 (inc)
netgear	nighthawk_rax43v2	to 1.1.6.36 (inc)
netgear	nighthawk_rax49s	*
netgear	nighthawk_rax50	*
netgear	nighthawk_rax50v2	*
netgear	nighthawk_rax54s	*
netgear	nighthawk_rax54sv2	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This is a buffer overflow vulnerability in certain NETGEAR models. It allows an authenticated admin user to cause the device to temporarily stop functioning.

Detection Guidance

Detection requires checking for affected NETGEAR models and monitoring for temporary unavailability. No specific commands are provided in the context. Review device logs for admin login anomalies or unexpected crashes.

Impact Analysis

An attacker with admin access could exploit this to make the device unavailable, disrupting network services temporarily.

Compliance Impact

The vulnerability allows an authenticated admin user to cause temporary unavailability of the device through a buffer overflow. This could disrupt network operations and potentially lead to data processing interruptions, which may impact compliance with standards requiring continuous availability of systems handling sensitive data.

Mitigation Strategies

Immediate mitigation includes restricting admin access to trusted users only and monitoring device performance for crashes. Apply any available firmware updates from NETGEAR if released.

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