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 R6700v3 firmware
NETGEAR R6400 firmware<1.0.4.126
NETGEAR R6400 firmware=v2
NETGEAR R6700 firmware<1.0.4.126
NETGEAR R6700v1 firmware=v3
NETGEAR R6900P firmware<1.3.3.148
Netgear R6900 Firmware
Netgear Nighthawk R7000 Firmware<1.0.11.134
NETGEAR Nighthawk R7000
NETGEAR R7000P firmware<1.3.3.148
Netgear Routers
NETGEAR R7850<1.0.5.84
NETGEAR R7850 firmware
NETGEAR R7960P firmware<1.4.3.88
NETGEAR R7960P firmware
NETGEAR R8000 firmware<1.0.4.84
NETGEAR R8000 firmware
NETGEAR R8000P<1.4.3.88
NETGEAR R8000P firmware
NETGEAR RAX200 firmware<1.0.6.138
NETGEAR RAX200 firmware
NETGEAR RAX75 firmware<1.0.6.138
NETGEAR RAX75 firmware
NETGEAR RAX80 Firmware<1.0.6.138
NETGEAR RAX80 firmware
NETGEAR RS400 firmware<1.5.1.86
NETGEAR RS400 firmware
NETGEAR CBR40 firmware<2.5.0.28
Netgear CBR40
NETGEAR LBR1020 firmware<2.7.4.2
NETGEAR LBR1020 firmware
NETGEAR LBR20 firmware<2.7.4.2
NETGEAR LBR20 firmware
NETGEAR RBR10 firmware<2.7.4.24
NETGEAR RBR10 firmware
NETGEAR RBR20<2.7.4.24
NETGEAR RBR20
NETGEAR CBR40 firmware<2.7.4.24
NETGEAR RBR40 firmware
NETGEAR RBR50 firmware<2.7.4.24
NETGEAR RBR50 firmware
NETGEAR RBS10<2.7.4.24
NETGEAR RBS10 firmware
NETGEAR RBS20<2.7.4.24
NETGEAR RBS20 firmware
NETGEAR RBS40 Firmware<2.7.4.24
NETGEAR RBS40 firmware
NETGEAR RBS50 Firmware<2.7.4.24
NETGEAR RBS50 Firmware

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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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