What is CVE-2018-21176?

CVE-2018-21176 is a vulnerability that affects certain NETGEAR devices and allows an authenticated user to perform a stack-based buffer overflow.

Which devices are affected by CVE-2018-21176?

CVE-2018-21176 affects D6100, R6100, R7500, R7800, R9000, WNDR3700v4, WNDR4300, and WNDR4300v2 devices.

What is the severity of CVE-2018-21176?

CVE-2018-21176 has a severity rating of 7.2, which is considered high.

How can an authenticated user exploit CVE-2018-21176?

An authenticated user can exploit CVE-2018-21176 by performing a stack-based buffer overflow on the affected NETGEAR devices.

Is there a fix available for CVE-2018-21176?

Yes, NETGEAR has released firmware updates to address the CVE-2018-21176 vulnerability. It is recommended to update the firmware of the affected devices.

Vulnerability/
CVE-2018-21176

high

7.2

CWE

787 119

27/4/2020

5/5/2020

CVE-2018-21176: Buffer Overflow

First published: Mon Apr 27 2020(Updated: )

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R6100 before 1.0.1.20, R7500 before 1.0.0.122, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Netgear D6100 Firmware	<1.0.0.57
NETGEAR D6100
Netgear R6100 Firmware	<1.0.1.20
Netgear R6100
Netgear R7500 Firmware	<1.0.0.122
Netgear R7500
NETGEAR R7800 firmware	<1.0.2.40
NETGEAR R7800
Netgear R9000 Firmware	<1.0.2.52
NETGEAR R9000
Netgear Wndr3700 Firmware	<1.0.2.92
Netgear WNDR3700	=v4
Netgear Wndr4300 Firmware	<1.0.2.94
Netgear Wndr4300
Netgear Wndr4300 Firmware	<1.0.0.50
Netgear Wndr4300	=v2
Netgear Wndr4500 Firmware	<1.0.0.50
Netgear WNDR4500	=v3
Netgear Wnr2000 Firmware	<1.0.0.62
Netgear WNR2000	=v5

Never miss a vulnerability like this again

Reference Links

https://kb.netgear.com/000055182/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2623

Frequently Asked Questions

What is CVE-2018-21176?
CVE-2018-21176 is a vulnerability that affects certain NETGEAR devices and allows an authenticated user to perform a stack-based buffer overflow.
Which devices are affected by CVE-2018-21176?
CVE-2018-21176 affects D6100, R6100, R7500, R7800, R9000, WNDR3700v4, WNDR4300, and WNDR4300v2 devices.
What is the severity of CVE-2018-21176?
CVE-2018-21176 has a severity rating of 7.2, which is considered high.
How can an authenticated user exploit CVE-2018-21176?
An authenticated user can exploit CVE-2018-21176 by performing a stack-based buffer overflow on the affected NETGEAR devices.
Is there a fix available for CVE-2018-21176?
Yes, NETGEAR has released firmware updates to address the CVE-2018-21176 vulnerability. It is recommended to update the firmware of the affected devices.