7.2
CWE
787 119
Advisory Published
Updated

CVE-2018-21177: 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, 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 SoftwareAffected VersionHow to fix
Netgear D6100 Firmware<1.0.0.57
NETGEAR D6100
Netgear R6100 Firmware<1.0.1.20
Netgear R6100
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

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Frequently Asked Questions

  • What is CVE-2018-21177?

    CVE-2018-21177 is a vulnerability that allows an authenticated user to execute a stack-based buffer overflow on certain NETGEAR devices.

  • Which NETGEAR devices are affected by CVE-2018-21177?

    The following NETGEAR devices are affected: D6100 before 1.0.0.57, R6100 before 1.0.1.20, 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, and WNDR4500v3 before 1.0.0.50.

  • How severe is CVE-2018-21177?

    CVE-2018-21177 has a severity rating of 7.2 (high).

  • How can I fix CVE-2018-21177?

    To fix CVE-2018-21177, it is recommended to update your device's firmware to the latest version provided by NETGEAR.

  • Where can I find more information about CVE-2018-21177?

    You can find more information about CVE-2018-21177 on the NETGEAR security advisory page: https://kb.netgear.com/000055181/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2622.

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