CVE-2022-27642: NETGEAR CAX80 Firmware

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-15854.

Affected products

NETGEAR CAX80 Firmware: before 2.1.3.7 (fixed in 2.1.3.7)
NETGEAR LAX20 Firmware: before 1.1.6.34 (fixed in 1.1.6.34)
NETGEAR MR60 Firmware: before 1.1.6.124 (fixed in 1.1.6.124)
NETGEAR MR80 Firmware: before 1.1.6.14 (fixed in 1.1.6.14)
NETGEAR MS60 Firmware: before 1.1.6.124 (fixed in 1.1.6.124)
NETGEAR MS80 Firmware: before 1.1.6.14 (fixed in 1.1.6.14)
NETGEAR r6400 Firmware: before 1.0.1.78 (fixed in 1.0.1.78); before 1.0.4.126 (fixed in 1.0.4.126)
NETGEAR r6700 Firmware: before 1.0.4.126 (fixed in 1.0.4.126)
NETGEAR r6900p Firmware: before 1.3.3.148 (fixed in 1.3.3.148)
NETGEAR r7000 Firmware: before 1.0.11.134 (fixed in 1.0.11.134)
NETGEAR r7000p Firmware: before 1.3.3.148 (fixed in 1.3.3.148)
NETGEAR r7100lg Firmware: before 1.0.0.76 (fixed in 1.0.0.76)
NETGEAR r7850 Firmware: before 1.0.5.84 (fixed in 1.0.5.84)
NETGEAR r7900p Firmware: before 1.4.3.88 (fixed in 1.4.3.88)
NETGEAR r7960p Firmware: before 1.4.3.88 (fixed in 1.4.3.88)
NETGEAR r8000 Firmware: before 1.0.4.84 (fixed in 1.0.4.84)
NETGEAR r8000p Firmware: before 1.4.3.88 (fixed in 1.4.3.88)
NETGEAR r8500 Firmware: before 1.0.2.158 (fixed in 1.0.2.158)
NETGEAR RAX15 Firmware: before 1.0.10.110 (fixed in 1.0.10.110)
NETGEAR RAX200 Firmware: before 1.0.6.138 (fixed in 1.0.6.138)
NETGEAR RAX20 Firmware: before 1.0.10.110 (fixed in 1.0.10.110)
NETGEAR RAX35 Firmware: before 1.0.10.110 (fixed in 1.0.10.110)
NETGEAR RAX38 Firmware: before 1.0.10.110 (fixed in 1.0.10.110)
NETGEAR RAX40 Firmware: before 1.0.10.110 (fixed in 1.0.10.110)
NETGEAR RAX42 Firmware: before 1.0.10.110 (fixed in 1.0.10.110)
and 8 more

Published 2023-03-29. Last modified 2026-06-17.