CVE-2022-27641: NETGEAR d7800 Firmware

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to execute arbitrary code 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 NetUSB module. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15806.

Affected products

• NETGEAR d7800 Firmware: before 1.0.1.68 (fixed in 1.0.1.68)
• NETGEAR EX6200 Firmware: before 1.0.1.90 (fixed in 1.0.1.90)
• NETGEAR EX8000 Firmware: before 1.0.1.240 (fixed in 1.0.1.240)
• NETGEAR r6220 Firmware: before 1.1.0.112 (fixed in 1.1.0.112)
• NETGEAR r6230 Firmware: before 1.1.0.112 (fixed in 1.1.0.112)
• NETGEAR r6400 Firmware: before 1.0.4.122 (fixed in 1.0.4.122)
• NETGEAR r6700 Firmware: before 1.0.4.122 (fixed in 1.0.4.122)
• NETGEAR r7000 Firmware: before 1.0.11.130 (fixed in 1.0.11.130)
• NETGEAR r7800 Firmware: before 1.0.2.90 (fixed in 1.0.2.90)

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