CVE-2021-45638: NETGEAR d6220 Firmware

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.74, D8500 before 1.0.3.60, DC112A before 1.0.0.56, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R7000 before 1.0.11.116, R7100LG before 1.0.0.70, RBS40V before 2.6.2.8, RBW30 before 2.6.2.2, RS400 before 1.5.1.80, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.

Affected products

NETGEAR d6220 Firmware: before 1.0.0.68 (fixed in 1.0.0.68)
NETGEAR d6400 Firmware: before 1.0.0.102 (fixed in 1.0.0.102)
NETGEAR d7000v2 Firmware: before 1.0.0.74 (fixed in 1.0.0.74)
NETGEAR d8500 Firmware: before 1.0.3.60 (fixed in 1.0.3.60)
NETGEAR DC112A Firmware: before 1.0.0.56 (fixed in 1.0.0.56)
NETGEAR r6300v2 Firmware: before 1.0.4.50 (fixed in 1.0.4.50)
NETGEAR r6400 Firmware: before 1.0.1.68 (fixed in 1.0.1.68)
NETGEAR r6900p Firmware: before 1.3.2.132 (fixed in 1.3.2.132)
NETGEAR r7000 Firmware: before 1.0.11.116 (fixed in 1.0.11.116)
NETGEAR r7000p Firmware: before 1.3.2.132 (fixed in 1.3.2.132)
NETGEAR r7100lg Firmware: before 1.0.0.70 (fixed in 1.0.0.70)
NETGEAR RBS40V Firmware: before 2.6.2.8 (fixed in 2.6.2.8)
NETGEAR RBW30 Firmware: before 2.6.2.2 (fixed in 2.6.2.2)
NETGEAR RS400 Firmware: before 1.5.1.80 (fixed in 1.5.1.80)

Published 2021-12-26. Last modified 2026-06-17.