CVE-2018-21171: NETGEAR d6100 Firmware

Medium severity, CVSS 6.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R7800 before 1.0.2.40, R9000 before 1.0.3.6, WNDR3700v4 before 1.0.2.92, and WNDR4300 before 1.0.2.98.

Affected products

• NETGEAR d6100 Firmware: before 1.0.0.57 (fixed in 1.0.0.57)
• NETGEAR r7800 Firmware: before 1.0.2.40 (fixed in 1.0.2.40)
• NETGEAR r9000 Firmware: before 1.0.2.40 (fixed in 1.0.2.40)
• NETGEAR WNDR3700 Firmware: before 1.0.2.92 (fixed in 1.0.2.92)
• NETGEAR WNDR4300 Firmware: before 1.0.2.98 (fixed in 1.0.2.98)

Published 2020-04-27. Last modified 2026-06-17.