CVE-2018-21142: NETGEAR r6100 Firmware

Medium severity, CVSS 4.9. EPSS: 1.1% chance of exploitation in the next 30 days.

Certain NETGEAR devices are affected by denial of service. This affects R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.64.

Affected products

• NETGEAR r6100 Firmware: before 1.0.1.22 (fixed in 1.0.1.22)
• NETGEAR r7500 Firmware: before 1.0.0.122 (fixed in 1.0.0.122)
• NETGEAR r7800 Firmware: before 1.0.2.42 (fixed in 1.0.2.42)
• NETGEAR r8900 Firmware: before 1.0.3.10 (fixed in 1.0.3.10)
• NETGEAR r9000 Firmware: before 1.0.3.10 (fixed in 1.0.3.10)
• NETGEAR WNDR3700 Firmware: before 1.0.2.96 (fixed in 1.0.2.96)
• NETGEAR WNDR4300 Firmware: before 1.0.2.98 (fixed in 1.0.2.98); before 1.0.0.54 (fixed in 1.0.0.54)
• NETGEAR WNDR4500 Firmware: before 1.0.0.54 (fixed in 1.0.0.54)
• NETGEAR WNR2000 Firmware: before 1.0.0.64 (fixed in 1.0.0.64)

Published 2020-04-23. Last modified 2026-06-17.