CVE-2017-18743

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-04-23 · updated 2026-06-17
Weakness: CWE-287

Description

Certain NETGEAR devices are affected by authentication bypass. This affects R6300v2 before 1.0.4.8, R6400 before 1.0.1.20, R6700 before 1.0.1.20, R6900 before 1.0.1.20, R7000 before 1.0.7.10, R7100LG before V1.0.0.32, R7300DST before 1.0.0.52, R7900 before 1.0.1.16, R8000 before 1.0.3.36, R8300 before 1.0.2.94, R8500 before 1.0.2.94, WNDR3400v3 before 1.0.1.12, and WNR3500Lv2 before 1.2.0.40.

Affected products

NETGEAR R6300 Firmware: before 1.0.4.8 — fixed in 1.0.4.8
NETGEAR R6400 Firmware: before 1.0.1.20 — fixed in 1.0.1.20
NETGEAR R6700: before 1.0.1.20 — fixed in 1.0.1.20
NETGEAR R6900 Firmware: before 1.0.1.20 — fixed in 1.0.1.20
NETGEAR R7000: before 1.0.7.10 — fixed in 1.0.7.10
NETGEAR R7100Lg Firmware: before 1.0.0.32 — fixed in 1.0.0.32
NETGEAR R7300Dst Firmware: before 1.0.0.52 — fixed in 1.0.0.52
NETGEAR R7900 Firmware: before 1.0.1.16 — fixed in 1.0.1.16
NETGEAR R8000 Firmware: before 1.0.3.36 — fixed in 1.0.3.36
NETGEAR R8300 Firmware: before 1.0.2.94 — fixed in 1.0.2.94
NETGEAR R8500 Firmware: before 1.0.2.94 — fixed in 1.0.2.94
NETGEAR Wndr3400 Firmware: before 1.0.1.12 — fixed in 1.0.1.12
NETGEAR Wnr3500L Firmware: before 1.2.0.40 — fixed in 1.2.0.40

How to fix

Upgrade to a fixed version: NETGEAR R6300 Firmware 1.0.4.8; NETGEAR R6400 Firmware 1.0.1.20; NETGEAR R6700 1.0.1.20; NETGEAR R6900 Firmware 1.0.1.20; NETGEAR R7000 1.0.7.10; NETGEAR R7100Lg Firmware 1.0.0.32; NETGEAR R7300Dst Firmware 1.0.0.52; NETGEAR R7900 Firmware 1.0.1.16; NETGEAR R8000 Firmware 1.0.3.36; NETGEAR R8300 Firmware 1.0.2.94; NETGEAR R8500 Firmware 1.0.2.94; NETGEAR Wndr3400 Firmware 1.0.1.12. Check the vendor advisory for mitigations.

References

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