CVE-2020-35809

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-30 · updated 2026-06-17
Weakness: CWE-79

Description

Certain NETGEAR devices are affected by stored XSS. This affects D7800 before 1.0.1.56, R7500v2 before 1.0.3.46, R7800 before 1.0.2.74, R8900 before 1.0.4.28, R9000 before 1.0.4.28, RAX120 before 1.0.0.78, RBK50 before 2.3.5.30, RBR50 before 2.3.5.30, RBS50 before 2.3.5.30, XR500 before 2.3.2.56, and XR700 before 1.0.1.10.

Affected products

NETGEAR D7800 Firmware: before 1.0.1.56 — fixed in 1.0.1.56
NETGEAR R7500V2 Firmware: before 1.0.3.46 — fixed in 1.0.3.46
NETGEAR R7800 Firmware: before 1.0.2.74 — fixed in 1.0.2.74
NETGEAR R8900 Firmware: before 1.0.4.28 — fixed in 1.0.4.28
NETGEAR R9000 Firmware: before 1.0.4.28 — fixed in 1.0.4.28
NETGEAR Rax120 Firmware: before 1.0.0.78 — fixed in 1.0.0.78
NETGEAR Rbk50 Firmware: before 2.3.5.30 — fixed in 2.3.5.30
NETGEAR Rbr50 Firmware: before 2.3.5.30 — fixed in 2.3.5.30
NETGEAR Rbs50 Firmware: before 2.3.5.30 — fixed in 2.3.5.30
NETGEAR Xr500 Firmware: before 2.3.2.56 — fixed in 2.3.2.56
NETGEAR Xr700 Firmware: before 1.0.1.10 — fixed in 1.0.1.10

How to fix

Upgrade to a fixed version: NETGEAR D7800 Firmware 1.0.1.56; NETGEAR R7500V2 Firmware 1.0.3.46; NETGEAR R7800 Firmware 1.0.2.74; NETGEAR R8900 Firmware 1.0.4.28; NETGEAR R9000 Firmware 1.0.4.28; NETGEAR Rax120 Firmware 1.0.0.78; NETGEAR Rbk50 Firmware 2.3.5.30; NETGEAR Rbr50 Firmware 2.3.5.30; NETGEAR Rbs50 Firmware 2.3.5.30; NETGEAR Xr500 Firmware 2.3.2.56; NETGEAR Xr700 Firmware 1.0.1.10. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2020-35809 or the next vulnerability affects your stack