critical
9.8
CWE
120 119
Advisory Published
Updated

CVE-2021-45527: Buffer Overflow

First published: Sun Dec 26 2021(Updated: )

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.66, D8500 before 1.0.3.58, DC112A before 1.0.0.54, EX7000 before 1.0.1.94, EX7500 before 1.0.0.72, R6250 before 1.0.4.48, R6300v2 before 1.0.4.52, R6400 before 1.0.1.70, R6400v2 before 1.0.4.102, R6700v3 before 1.0.4.102, R7000 before 1.0.11.116, R7100LG before 1.0.0.64, R7850 before 1.0.5.68, R7900 before 1.0.4.30, R7960P before 1.4.1.68, R8000 before 1.0.4.52, RAX200 before 1.0.2.88, RBS40V before 2.6.2.4, RS400 before 1.5.1.80, XR300 before 1.0.3.56, R7000P before 1.3.2.124, R8000P before 1.4.1.68, R8500 before 1.0.2.144, RAX80 before 1.0.3.102, R6900P before 1.3.2.124, R7900P before 1.4.1.68, R8300 before 1.0.2.144, RAX75 before 1.0.3.102, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, RBS850 before 3.2.17.12, RBK752 before 3.2.17.12, and RBK852 before 3.2.17.12.

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

Affected SoftwareAffected VersionHow to fix
All of
NETGEAR RBK752 firmware<3.2.17.12
NETGEAR RBK752 firmware
All of
NETGEAR RBR750<3.2.17.12
NETGEAR RBR750 firmware
All of
NETGEAR RBS750<3.2.17.12
NETGEAR RBS750
All of
NETGEAR RBK852<3.2.17.12
NETGEAR RBK852
All of
NETGEAR RBR850 firmware<3.2.17.12
NETGEAR RBR850 firmware
All of
NETGEAR RBS850<3.2.17.12
NETGEAR RBS850 firmware
All of
Netgear D6220 Firmware<1.0.0.68
NETGEAR D6220 firmware
All of
NETGEAR D6400<1.0.0.102
NETGEAR D6400 firmware
All of
NETGEAR D7000v2<1.0.0.66
NETGEAR D7000v2 firmware
All of
Netgear D8500 Firmware<1.0.3.58
Netgear D8500 Firmware
All of
NETGEAR DC112A firmware<1.0.0.54
Netgear DC112A
All of
NETGEAR EX7000 firmware<1.0.1.94
NETGEAR EX7000 firmware
All of
NETGEAR EX7500<1.0.0.72
NETGEAR EX7500
All of
netgear R6250 Firmware<1.0.4.48
NETGEAR R6250
All of
Netgear R6300v2<1.0.4.52
Netgear R6300v2
All of
NETGEAR R6400 firmware<1.0.1.70
NETGEAR R6400 firmware
All of
NETGEAR R6400v2 firmware<1.0.4.102
NETGEAR R6400v2 firmware
All of
Netgear R6700 Firmware<1.0.4.102
NETGEAR R6700v3 firmware
All of
NETGEAR R7000 firmware<1.0.11.116
NETGEAR R7000 firmware
All of
NETGEAR R7100LG firmware<1.0.0.64
Netgear R7100LG
All of
NETGEAR R7850<1.0.5.68
NETGEAR R7850 firmware
All of
NETGEAR R7900P firmware<1.0.4.30
NETGEAR R7900P firmware
All of
NETGEAR R7960P firmware<1.4.1.68
NETGEAR R7960P firmware
All of
NETGEAR R8000 firmware<1.0.4.52
NETGEAR R8000 firmware
All of
NETGEAR RAX200 firmware<1.0.2.88
NETGEAR RAX200 firmware
All of
NETGEAR RAX75 firmware<1.0.3.102
NETGEAR RAX75 firmware
All of
NETGEAR RAX80 firmware<1.0.3.102
NETGEAR RAX80 firmware
All of
NETGEAR RBS40V<2.6.2.4
NETGEAR RBS40V-200
All of
NETGEAR XR300 firmware<1.0.3.56
Netgear XR300
All of
NETGEAR RS400 firmware<1.5.1.80
NETGEAR RS400 firmware
All of
NETGEAR R7000P firmware<1.3.2.124
Netgear R7000P
All of
NETGEAR R8000P<1.4.1.68
NETGEAR R8000P firmware
All of
NETGEAR R8500<1.0.2.144
NETGEAR R8500
All of
NETGEAR R6900P firmware<1.3.2.124
Netgear R6900 Firmware
All of
NETGEAR R7900P firmware<1.4.1.68
NETGEAR R7900P firmware
All of
NETGEAR R8300 firmware<1.0.2.144
NETGEAR R8300 firmware
NETGEAR RBK752 firmware<3.2.17.12
NETGEAR RBK752 firmware
NETGEAR RBR750<3.2.17.12
NETGEAR RBR750 firmware
NETGEAR RBS750<3.2.17.12
NETGEAR RBS750
NETGEAR RBK852<3.2.17.12
NETGEAR RBK852
NETGEAR RBR850 firmware<3.2.17.12
NETGEAR RBR850 firmware
NETGEAR RBS850<3.2.17.12
NETGEAR RBS850 firmware
Netgear D6220 Firmware<1.0.0.68
NETGEAR D6220 firmware
NETGEAR D6400<1.0.0.102
NETGEAR D6400 firmware
NETGEAR D7000v2<1.0.0.66
NETGEAR D7000v2 firmware
Netgear D8500 Firmware<1.0.3.58
Netgear D8500 Firmware
NETGEAR DC112A firmware<1.0.0.54
Netgear DC112A
NETGEAR EX7000 firmware<1.0.1.94
NETGEAR EX7000 firmware
NETGEAR EX7500<1.0.0.72
NETGEAR EX7500
netgear R6250 Firmware<1.0.4.48
NETGEAR R6250
Netgear R6300v2<1.0.4.52
Netgear R6300v2
NETGEAR R6400 firmware<1.0.1.70
NETGEAR R6400 firmware
NETGEAR R6400v2 firmware<1.0.4.102
NETGEAR R6400v2 firmware
Netgear R6700 Firmware<1.0.4.102
NETGEAR R6700v3 firmware
NETGEAR R7000 firmware<1.0.11.116
NETGEAR R7000 firmware
NETGEAR R7100LG firmware<1.0.0.64
Netgear R7100LG
NETGEAR R7850<1.0.5.68
NETGEAR R7850 firmware
NETGEAR R7900P firmware<1.0.4.30
NETGEAR R7900P firmware
NETGEAR R7960P firmware<1.4.1.68
NETGEAR R7960P firmware
NETGEAR R8000 firmware<1.0.4.52
NETGEAR R8000 firmware
NETGEAR RAX200 firmware<1.0.2.88
NETGEAR RAX200 firmware
NETGEAR RAX75 firmware<1.0.3.102
NETGEAR RAX75 firmware
NETGEAR RAX80 firmware<1.0.3.102
NETGEAR RAX80 firmware
NETGEAR RBS40V<2.6.2.4
NETGEAR RBS40V-200
NETGEAR XR300 firmware<1.0.3.56
Netgear XR300
NETGEAR RS400 firmware<1.5.1.80
NETGEAR RS400 firmware
NETGEAR R7000P firmware<1.3.2.124
Netgear R7000P
NETGEAR R8000P<1.4.1.68
NETGEAR R8000P firmware
NETGEAR R8500<1.0.2.144
NETGEAR R8500
NETGEAR R6900P firmware<1.3.2.124
Netgear R6900 Firmware
NETGEAR R7900P firmware<1.4.1.68
NETGEAR R7900P firmware
NETGEAR R8300 firmware<1.0.2.144
NETGEAR R8300 firmware

Remedy

https://kb.netgear.com/000064493/Security-Advisory-for-Post-Authentication-Buffer-Overflow-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2020-0437

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-45527?

    CVE-2021-45527 has a high severity rating due to the potential for a buffer overflow that could allow authenticated attackers to execute arbitrary code.

  • How do I fix CVE-2021-45527?

    To mitigate CVE-2021-45527, update your NETGEAR devices to the latest firmware version as specified in the security advisory.

  • Which NETGEAR devices are affected by CVE-2021-45527?

    CVE-2021-45527 affects multiple NETGEAR devices including models D6220, D6400, D7000v2, D8500, DC112A, EX7000, and EX7500 among others.

  • Is CVE-2021-45527 remotely exploitable?

    CVE-2021-45527 requires an authenticated user, meaning that attackers need access credentials to exploit the vulnerability.

  • What are the potential impacts of CVE-2021-45527?

    Successful exploitation of CVE-2021-45527 could lead to arbitrary code execution which compromises the affected device's integrity and functionality.

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