What is the severity of CVE-2018-21146?

CVE-2018-21146 is classified as a critical vulnerability due to its potential for command injection by an authenticated user.

How do I fix CVE-2018-21146?

To fix CVE-2018-21146, users should upgrade their NETGEAR devices to the latest firmware version that addresses the vulnerability.

Which NETGEAR devices are affected by CVE-2018-21146?

CVE-2018-21146 affects NETGEAR D7800, R7800, R8900, R9000, WNDR4300v2, and WNDR4500v3 devices running specific firmware versions prior to the updates.

Can CVE-2018-21146 be exploited remotely?

CVE-2018-21146 requires authentication, so an attacker must have access to valid credentials to exploit this vulnerability.

Is there a temporary mitigation for CVE-2018-21146?

As a temporary measure, users can restrict access to the affected NETGEAR devices to trusted networks only until they can apply the firmware update.

Vulnerability/
CVE-2018-21146

medium

6.8

CWE

74 77

21/4/2020

5/8/2024

CVE-2018-21146: Command Injection

First published: Tue Apr 21 2020(Updated: )

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.34, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR4300v2 before 1.0.0.54, and WNDR4500v3 before 1.0.0.54.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
NETGEAR D7800	<1.0.1.34
NETGEAR D7800 Firmware
NETGEAR R7800 firmware	<1.0.2.42
NETGEAR R7800 firmware
NETGEAR R8900 firmware	<1.0.3.10
NETGEAR R8900
NETGEAR R9000 firmware	<1.0.3.10
NETGEAR R9000 firmware
NETGEAR WNDR4300v2 firmware	<1.0.0.54
NETGEAR wndr4300v2	=v2
NETGEAR WNDR4500 firmware	<1.0.0.54
NETGEAR WNDR4500v3	=v3

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Reference Links

https://kb.netgear.com/000059487/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Gateways-and-Routers-PSV-2017-3159

Frequently Asked Questions

What is the severity of CVE-2018-21146?
CVE-2018-21146 is classified as a critical vulnerability due to its potential for command injection by an authenticated user.
How do I fix CVE-2018-21146?
To fix CVE-2018-21146, users should upgrade their NETGEAR devices to the latest firmware version that addresses the vulnerability.
Which NETGEAR devices are affected by CVE-2018-21146?
CVE-2018-21146 affects NETGEAR D7800, R7800, R8900, R9000, WNDR4300v2, and WNDR4500v3 devices running specific firmware versions prior to the updates.
Can CVE-2018-21146 be exploited remotely?
CVE-2018-21146 requires authentication, so an attacker must have access to valid credentials to exploit this vulnerability.
Is there a temporary mitigation for CVE-2018-21146?
As a temporary measure, users can restrict access to the affected NETGEAR devices to trusted networks only until they can apply the firmware update.

agent/type
collector/mitre-cve
source/MITRE
agent/weakness
agent/references
agent/last-modified-date
agent/author
agent/severity
agent/first-publish-date
agent/description
agent/event
agent/source
agent/softwarecombine
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/netgear
canonical/netgear d7800
canonical/netgear d7800 firmware
canonical/netgear r7800 firmware
canonical/netgear r8900 firmware
canonical/netgear r8900
canonical/netgear r9000 firmware
canonical/netgear wndr4300v2 firmware
canonical/netgear wndr4300v2
version/netgear wndr4300v2/v2
canonical/netgear wndr4500 firmware
canonical/netgear wndr4500v3
version/netgear wndr4500v3/v3

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Frequently Asked Questions

What is the severity of CVE-2018-21146?
CVE-2018-21146 is classified as a critical vulnerability due to its potential for command injection by an authenticated user.
How do I fix CVE-2018-21146?
To fix CVE-2018-21146, users should upgrade their NETGEAR devices to the latest firmware version that addresses the vulnerability.
Which NETGEAR devices are affected by CVE-2018-21146?
CVE-2018-21146 affects NETGEAR D7800, R7800, R8900, R9000, WNDR4300v2, and WNDR4500v3 devices running specific firmware versions prior to the updates.
Can CVE-2018-21146 be exploited remotely?
CVE-2018-21146 requires authentication, so an attacker must have access to valid credentials to exploit this vulnerability.
Is there a temporary mitigation for CVE-2018-21146?
As a temporary measure, users can restrict access to the affected NETGEAR devices to trusted networks only until they can apply the firmware update.