CVE-2022-27646

HIGH

Netgear R6400 Firmware < 1.0.4.126 - Stack Buffer Overflow

Title source: rule
STIX 2.1

Description

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.

Exploits (1)

nomisec WORKING POC 8 stars
by cyber-defence-campus · poc
https://github.com/cyber-defence-campus/netgear_r6700v3_circled

References (2)

Core 2

Scores

CVSS v3 8.8
EPSS 0.0241
EPSS Percentile 85.2%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (24)
netgear/cbr40_firmware < 2.5.0.28
netgear/lbr1020_firmware < 2.7.4.2
netgear/lbr20_firmware < 2.7.4.2
netgear/r6400_firmware < 1.0.4.126
netgear/r6700_firmware < 1.0.4.126
netgear/r6900p_firmware < 1.3.3.148
netgear/r7000_firmware < 1.0.11.134
netgear/r7000p_firmware < 1.3.3.148
netgear/r7850_firmware < 1.0.5.84
netgear/r7960p_firmware < 1.4.3.88
... and 14 more
Published Mar 29, 2023
Tracked Since Feb 18, 2026