critical
9.8
CWE
787 119
Advisory Published
Updated

CVE-2021-45638: Buffer Overflow

First published: Sun Dec 26 2021(Updated: )

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.74, D8500 before 1.0.3.60, DC112A before 1.0.0.56, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R7000 before 1.0.11.116, R7100LG before 1.0.0.70, RBS40V before 2.6.2.8, RBW30 before 2.6.2.2, RS400 before 1.5.1.80, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Netgear D6220 Firmware<1.0.0.68
NETGEAR D6220
NETGEAR R6400v2<1.0.0.102
Netgear D6400
NETGEAR R6400v2<1.0.0.74
NETGEAR R6400v2
Netgear D8500 Firmware<1.0.3.60
Netgear D8500
Netgear Dc112a Firmware<1.0.0.56
Netgear DC112A
Netgear R6300v2 Firmware<1.0.4.50
Netgear R6300v2
Netgear R6400 Firmware<1.0.1.68
NETGEAR R6400
Netgear R7000 Firmware<1.0.11.116
NETGEAR R7000
Netgear R7100lg Firmware<1.0.0.70
Netgear R7100LG
Netgear R7000p Firmware<1.3.2.132
Netgear R7000P
Netgear Rbs40v Firmware<2.6.2.8
Netgear Rbs40v
Netgear Rbw30 Firmware<2.6.2.2
Netgear Rbw30
Netgear Rs400 Firmware<1.5.1.80
Netgear Rs400
Netgear R6900p Firmware<1.3.2.132
Netgear R6900P

Remedy

https://kb.netgear.com/000064496/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2020-0464

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-45638?

    The severity of CVE-2021-45638 is critical with a severity value of 9.8.

  • Which NETGEAR devices are affected by CVE-2021-45638?

    NETGEAR devices D6220, D6400, D7000v2, D8500, DC112A, R6300v2, R6400, and R7000 are affected by CVE-2021-45638.

  • How does CVE-2021-45638 impact the affected NETGEAR devices?

    CVE-2021-45638 allows an unauthenticated attacker to execute a stack-based buffer overflow on the affected NETGEAR devices.

  • Is firmware version 1.0.0.68 of NETGEAR D6220 vulnerable to CVE-2021-45638?

    Yes, firmware version 1.0.0.68 of NETGEAR D6220 is vulnerable to CVE-2021-45638.

  • How can I fix CVE-2021-45638 on my NETGEAR device?

    To fix CVE-2021-45638, you should update your NETGEAR device firmware to the latest version provided by NETGEAR.

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