CVE-2021-45666: NETGEAR CBR40 Firmware

Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Certain NETGEAR devices are affected by stored XSS. This affects CBR40 before 2.5.0.10, EAX80 before 1.0.1.64, EX3700 before 1.0.0.90, EX3800 before 1.0.0.90, EX6120 before 1.0.0.64, EX6130 before 1.0.0.44, EX7500 before 1.0.0.72, RBW30 before 2.6.1.4, RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, RBS850 before 3.2.16.6, and RBS40V before 2.6.1.4.

Affected products

• NETGEAR CBR40 Firmware: before 2.5.0.10 (fixed in 2.5.0.10)
• NETGEAR EAX80 Firmware: before 1.0.1.64 (fixed in 1.0.1.64)
• NETGEAR EX3700 Firmware: before 1.0.0.90 (fixed in 1.0.0.90)
• NETGEAR EX3800 Firmware: before 1.0.0.90 (fixed in 1.0.0.90)
• NETGEAR EX6120 Firmware: before 1.0.0.64 (fixed in 1.0.0.64)
• NETGEAR EX6130 Firmware: before 1.0.0.44 (fixed in 1.0.0.44)
• NETGEAR EX7500 Firmware: before 1.0.0.72 (fixed in 1.0.0.72)
• NETGEAR RBK752 Firmware: before 3.2.16.6 (fixed in 3.2.16.6)
• NETGEAR RBK852 Firmware: before 3.2.16.6 (fixed in 3.2.16.6)
• NETGEAR RBR750 Firmware: before 3.2.16.6 (fixed in 3.2.16.6)
• NETGEAR RBR850 Firmware: before 3.2.16.6 (fixed in 3.2.16.6)
• NETGEAR RBS40V Firmware: before 2.6.1.4 (fixed in 2.6.1.4)
• NETGEAR RBS750 Firmware: before 3.2.16.6 (fixed in 3.2.16.6)
• NETGEAR RBS850 Firmware: before 3.2.16.6 (fixed in 3.2.16.6)
• NETGEAR RBW30 Firmware: before 2.6.1.4 (fixed in 2.6.1.4)

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