CVE-2018-21200: NETGEAR r7800 Firmware

Medium severity, CVSS 6.8. EPSS: 0.6% 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 R7800 before 1.0.2.40 and R9000 before 1.0.3.6.

Affected products

• NETGEAR r7800 Firmware: before 1.0.2.40 (fixed in 1.0.2.40)
• NETGEAR r9000 Firmware: before 1.0.3.6 (fixed in 1.0.3.6)

Published 2020-04-28. Last modified 2026-06-17.