CVE-2021-45623: NETGEAR r7800 Firmware

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects R7800 before 1.0.2.74, R9000 before 1.0.5.2, and XR500 before 2.3.2.66.

Affected products

• NETGEAR r7800 Firmware: before 1.0.2.74 (fixed in 1.0.2.74)
• NETGEAR r9000 Firmware: before 1.0.5.2 (fixed in 1.0.5.2)
• NETGEAR XR500 Firmware: before 2.3.2.66 (fixed in 2.3.2.66)

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