CVE-2021-45609

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-12-26 · updated 2026-06-17
Weakness: CWE-120

Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D8500 before 1.0.3.58, R6250 before 1.0.4.48, R7000 before 1.0.11.116, R7100LG before 1.0.0.64, R7900 before 1.0.4.38, R8300 before 1.0.2.144, R8500 before 1.0.2.144, XR300 before 1.0.3.68, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.

Affected products

NETGEAR D8500 Firmware: before 1.0.3.58 — fixed in 1.0.3.58
NETGEAR R6250 Firmware: before 1.0.4.48 — fixed in 1.0.4.48
NETGEAR R6900P Firmware: before 1.3.2.132 — fixed in 1.3.2.132
NETGEAR R7000: before 1.0.11.116 — fixed in 1.0.11.116
NETGEAR R7000P: before 1.3.2.132 — fixed in 1.3.2.132
NETGEAR R7100Lg Firmware: before 1.0.0.64 — fixed in 1.0.0.64
NETGEAR R7900 Firmware: before 1.0.4.38 — fixed in 1.0.4.38
NETGEAR R8300 Firmware: before 1.0.2.144 — fixed in 1.0.2.144
NETGEAR R8500 Firmware: before 1.0.2.144 — fixed in 1.0.2.144
NETGEAR Xr300 Firmware: before 1.0.3.68 — fixed in 1.0.3.68

How to fix

Upgrade to a fixed version: NETGEAR D8500 Firmware 1.0.3.58; NETGEAR R6250 Firmware 1.0.4.48; NETGEAR R6900P Firmware 1.3.2.132; NETGEAR R7000 1.0.11.116; NETGEAR R7000P 1.3.2.132; NETGEAR R7100Lg Firmware 1.0.0.64; NETGEAR R7900 Firmware 1.0.4.38; NETGEAR R8300 Firmware 1.0.2.144; NETGEAR R8500 Firmware 1.0.2.144; NETGEAR Xr300 Firmware 1.0.3.68. Check the vendor advisory for mitigations.

References

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