NETGEAR buffer Overflow Vulnerability Let Attackers Bypass Authentication

Some router models have identified a security vulnerability that allows attackers to bypass authentication.

To exploit this vulnerability, an attacker must know the WiFi password or have an Ethernet connection to a device on the victim’s network. 

Firmware updates that address this vulnerability are available for the following routers: RAX35 (version, RAX38 (version, and RAX40 (version

It is strongly recommended that users download and install the latest firmware update as soon as possible. 

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The document details an authentication bypass vulnerability in a NETGEAR product and emphasizes the crucial importance of completing all the recommended steps to patch the vulnerability. 

Failing to do so might expose your system, and NETGEAR is not responsible for any avoidable consequences.

This is only informational and does not carry any guarantees, as NETGEAR reserves the right to update the information as needed. 

A critical vulnerability has been identified with a CVSS score of 8.4, which indicates a high-severity issue that can be exploited remotely (Attack Vector: Low) without complex actions by an attacker (Attack Complexity: Low). 

No special privileges are required (Privileges Required: None), and no user interaction is needed (User Interaction: None).


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The vulnerability allows an attacker to compromise the affected system’s confidentiality, integrity, and availability (Scope: Unchanged; Confidentiality: High; Integrity: High; Availability: High). 

NETGEAR recommends updating devices with the most recent firmware to implement security patches, bug fixes, and new features. 

For NETGEAR app-supported devices, update the firmware through the corresponding app: the Orbi app for Orbi products, the Nighthawk app for NETGEAR WiFi routers, and the Insight app for some NETGEAR Business products (requires an Insight subscription).

For manual update instructions for unsupported devices, refer to the user manual, firmware release notes, or product support page. 

The document underwent two revisions recently, as on April 15th, an advisory containing security recommendations was published.

Subsequently, on April 21st, the document was updated to acknowledge contributions from relevant parties, likely addressing collaborators, reviewers, or external sources that were not previously credited. 

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Author: Eswar