What is CVE-2018-21218?

CVE-2018-21218 is a vulnerability that affects certain NETGEAR devices and allows an unauthenticated attacker to execute a buffer overflow attack.

Which devices are affected by CVE-2018-21218?

Certain NETGEAR devices including D3600, D6000, D6100, D7800, R6100, R7500, R7500v2, R9000, WNDR3700v4, WNR2000, Wndr4300, and Wndr4500 are affected by CVE-2018-21218.

What is the severity of CVE-2018-21218?

CVE-2018-21218 has a severity value of 8.8, which is considered high.

How can an unauthenticated attacker exploit CVE-2018-21218?

An unauthenticated attacker can exploit CVE-2018-21218 by executing a buffer overflow attack.

Is there a fix available for CVE-2018-21218?

Yes, Netgear has released firmware updates to fix the CVE-2018-21218 vulnerability. It is recommended to update the firmware of affected devices to the latest version.

Vulnerability/
CVE-2018-21218

high

8.8

CWE

120 119

28/4/2020

5/8/2024

CVE-2018-21218: Buffer Overflow

First published: Tue Apr 28 2020(Updated: )

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, D6100 before 1.0.0.56, D7800 before 1.0.1.30, R6100 before 1.0.1.20, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, 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 Wnr2000 Firmware	<1.0.0.62
Netgear WNR2000	=v5
Netgear R9000 Firmware	<1.0.2.52
NETGEAR R9000
Netgear Wndr3700 Firmware	<1.0.2.96
Netgear WNDR3700	=v4
Netgear Wndr4300 Firmware	<1.0.2.98
Netgear Wndr4300
Netgear R7500 Firmware	<1.0.0.118
Netgear R7500
Netgear Wndr4300 Firmware	<1.0.0.50
Netgear Wndr4300	=v2
Netgear Wndr4500 Firmware	<1.0.0.50
Netgear WNDR4500	=v3
Netgear R6100 Firmware	<1.0.1.20
Netgear R6100
Netgear D7800 Firmware	<1.0.1.30
Netgear D7800
Netgear R7500 Firmware	<1.0.3.24
Netgear R7500	=v2
Netgear D6000 Firmware	<1.0.0.67
Netgear D6000
Netgear D3600 Firmware	<1.0.0.67
NETGEAR D3600
Netgear D6100 Firmware	<1.0.0.56
NETGEAR D6100

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Reference Links

https://kb.netgear.com/000055119/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2483

Frequently Asked Questions

What is CVE-2018-21218?
CVE-2018-21218 is a vulnerability that affects certain NETGEAR devices and allows an unauthenticated attacker to execute a buffer overflow attack.
Which devices are affected by CVE-2018-21218?
Certain NETGEAR devices including D3600, D6000, D6100, D7800, R6100, R7500, R7500v2, R9000, WNDR3700v4, WNR2000, Wndr4300, and Wndr4500 are affected by CVE-2018-21218.
What is the severity of CVE-2018-21218?
CVE-2018-21218 has a severity value of 8.8, which is considered high.
How can an unauthenticated attacker exploit CVE-2018-21218?
An unauthenticated attacker can exploit CVE-2018-21218 by executing a buffer overflow attack.
Is there a fix available for CVE-2018-21218?
Yes, Netgear has released firmware updates to fix the CVE-2018-21218 vulnerability. It is recommended to update the firmware of affected devices to the latest version.