critical
9.8
CWE
120 119
Advisory Published
Updated

CVE-2021-45609: Buffer Overflow

First published: Sun Dec 26 2021(Updated: )

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D8500 before 1.0.3.58, R6250 before 1.0.4.48, R7000 before 1.0.11.116, R7100LG before 1.0.0.64, R7900 before 1.0.4.38, R8300 before 1.0.2.144, R8500 before 1.0.2.144, XR300 before 1.0.3.68, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Netgear D8500 Firmware<1.0.3.58
Netgear D8500 Firmware
netgear R6250 Firmware<1.0.4.48
NETGEAR R6250
NETGEAR R7000 firmware<1.0.11.116
NETGEAR R7000 firmware
NETGEAR R7000P firmware<1.3.2.132
Netgear R7000P
NETGEAR R6900P firmware<1.3.2.132
Netgear R6900 Firmware
NETGEAR R7900P firmware<1.0.4.38
NETGEAR R7900P firmware
NETGEAR R8300 firmware<1.0.2.144
NETGEAR R8300 firmware
NETGEAR R8500<1.0.2.144
NETGEAR R8500
NETGEAR R7100LG firmware<1.0.0.64
Netgear R7100LG
NETGEAR XR300 firmware<1.0.3.68
Netgear XR300
All of
Netgear D8500 Firmware<1.0.3.58
Netgear D8500 Firmware
All of
netgear R6250 Firmware<1.0.4.48
NETGEAR R6250
All of
NETGEAR R7000 firmware<1.0.11.116
NETGEAR R7000 firmware
All of
NETGEAR R7000P firmware<1.3.2.132
Netgear R7000P
All of
NETGEAR R6900P firmware<1.3.2.132
Netgear R6900 Firmware
All of
NETGEAR R7900P firmware<1.0.4.38
NETGEAR R7900P firmware
All of
NETGEAR R8300 firmware<1.0.2.144
NETGEAR R8300 firmware
All of
NETGEAR R8500<1.0.2.144
NETGEAR R8500
All of
NETGEAR R7100LG firmware<1.0.0.64
Netgear R7100LG
All of
NETGEAR XR300 firmware<1.0.3.68
Netgear XR300

Remedy

https://kb.netgear.com/000064483/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2020-0274

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-45609?

    CVE-2021-45609 is a buffer overflow vulnerability in certain NETGEAR devices which allows an unauthenticated attacker to execute arbitrary code.

  • Which NETGEAR devices are affected by CVE-2021-45609?

    Devices affected by CVE-2021-45609 include D8500 before 1.0.3.58, R6250 before 1.0.4.48, R7000 before 1.0.11.116, R7100LG before 1.0.0.64, R7900 before 1.0.4.38, R8300 before 1.0.2.144, R8500 before 1.0.2.144, XR300 before 1.0.3.68, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.

  • What is the severity of CVE-2021-45609?

    CVE-2021-45609 has a severity score of 9.8, indicating a critical vulnerability.

  • How can an attacker exploit CVE-2021-45609?

    An unauthenticated attacker can exploit CVE-2021-45609 by sending a specially crafted request, triggering a buffer overflow condition and potentially executing arbitrary code.

  • How can I mitigate CVE-2021-45609?

    To mitigate CVE-2021-45609, it is recommended to update to the latest firmware version provided by NETGEAR, which addresses the buffer overflow vulnerability.

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