high
8.8
CWE
121
Advisory Published
Updated
Advisory Published

CVE-2022-27646: (Pwn2Own) NETGEAR R6700v3 circled Stack-based Buffer Overflow Remote Code Execution Vulnerability

First published: Wed Mar 29 2023(Updated: )

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.

Credit: zdi-disclosures@trendmicro.com

Affected SoftwareAffected VersionHow to fix
Netgear R6400 Firmware<1.0.4.126
NETGEAR R6400=v2
Netgear R6700 Firmware<1.0.4.126
NETGEAR R6700=v3
Netgear R6900p Firmware<1.3.3.148
Netgear R6900P
Netgear R7000 Firmware<1.0.11.134
NETGEAR R7000
Netgear R7000p Firmware<1.3.3.148
Netgear R7000P
Netgear R7850 Firmware<1.0.5.84
NETGEAR R6400v2
Netgear R7960p Firmware<1.4.3.88
Netgear R7960p
Netgear R8000 Firmware<1.0.4.84
NETGEAR R8000
Netgear R8000p Firmware<1.4.3.88
Netgear R8000p
Netgear Rax200 Firmware<1.0.6.138
NETGEAR RAX200
Netgear Rax75 Firmware<1.0.6.138
Netgear Rax75
Netgear Rax80 Firmware<1.0.6.138
Netgear Rax80
Netgear Rs400 Firmware<1.5.1.86
Netgear Rs400
Netgear Cbr40 Firmware<2.5.0.28
Netgear Cbr40
Netgear Lbr1020 Firmware<2.7.4.2
Netgear Lbr1020
Netgear Lbr20 Firmware<2.7.4.2
Netgear Lbr20
Netgear Rbr10 Firmware<2.7.4.24
Netgear Rbr10
Netgear Rbr20 Firmware<2.7.4.24
Netgear Rbr20
Netgear Rbr40 Firmware<2.7.4.24
Netgear Rbr40
Netgear Rbr50 Firmware<2.7.4.24
Netgear Rbr50
Netgear Rbs10 Firmware<2.7.4.24
Netgear Rbs10
Netgear Rbs20 Firmware<2.7.4.24
Netgear Rbs20
Netgear Rbs40 Firmware<2.7.4.24
Netgear Rbs40
Netgear Rbs50 Firmware<2.7.4.24
Netgear Rbs50
NETGEAR R6700v3

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this NETGEAR R6700v3 vulnerability?

    The vulnerability ID for this NETGEAR R6700v3 vulnerability is CVE-2022-27646.

  • What is the severity of CVE-2022-27646?

    The severity of CVE-2022-27646 is high, with a CVSS score of 8.8.

  • How can an attacker exploit CVE-2022-27646?

    An attacker can exploit CVE-2022-27646 by executing arbitrary code on affected installations of NETGEAR R6700v3 routers.

  • Is authentication required to exploit CVE-2022-27646?

    Yes, authentication is required to exploit CVE-2022-27646, but the existing authentication mechanism can be bypassed.

  • Are other NETGEAR products vulnerable to CVE-2022-27646?

    No, only NETGEAR R6700v3 routers are affected by CVE-2022-27646.

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