CVE-2021-45528: NETGEAR r6300v2 Firmware

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects R6300v2 before 1.0.4.52, R6400 before 1.0.1.52, R6900 before 1.0.2.8, R7000 before 1.0.9.88, R7900 before 1.0.3.18, R8000 before 1.0.4.46, R7900P before 1.4.1.50, R8000P before 1.4.1.50, RAX75 before 1.0.3.88, RAX80 before 1.0.3.88, and WNR3500Lv2 before 1.2.0.62.

Affected products

• NETGEAR r6300v2 Firmware: up to and including 1.0.4.52
• NETGEAR r6400 Firmware: before 1.0.1.52 (fixed in 1.0.1.52)
• NETGEAR r6900 Firmware: before 1.0.2.8 (fixed in 1.0.2.8)
• NETGEAR r7000 Firmware: before 1.0.9.88 (fixed in 1.0.9.88)
• NETGEAR r7900 Firmware: before 1.0.3.18 (fixed in 1.0.3.18)
• NETGEAR r7900p Firmware: before 1.4.1.50 (fixed in 1.4.1.50)
• NETGEAR r8000 Firmware: before 1.0.4.46 (fixed in 1.0.4.46)
• NETGEAR r8000p Firmware: before 1.4.1.50 (fixed in 1.4.1.50)
• NETGEAR RAX75 Firmware: before 1.0.3.88 (fixed in 1.0.3.88)
• NETGEAR RAX80 Firmware: before 1.0.3.88 (fixed in 1.0.3.88)
• NETGEAR WNR3500LV2 Firmware: before 1.2.0.62 (fixed in 1.2.0.62)

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