CVE-2021-45604

Severity: medium (CVSS 4.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% 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-787

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects CBR750 before 3.2.18.2, D6220 before 1.0.0.68, D6400 before 1.0.0.102, D8500 before 1.0.3.60, LAX20 before 1.1.6.28, MK62 before 1.0.6.116, MR60 before 1.0.6.116, MS60 before 1.0.6.116, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R6400v2 before 1.0.4.118, R6700v3 before 1.0.4.118, R6900P before 1.3.3.140, R7000 before 1.0.11.116, R7000P before 1.3.3.140, R7850 before 1.0.5.68, R7900 before 1.0.4.38, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.68, R8000P before 1.4.2.84, RAX15 before 1.0.3.96, RAX20 before 1.0.3.96, RAX200 before 1.0.4.120, RAX35v2 before 1.0.3.96, RAX40v2 before 1.0.3.96, RAX43 before 1.0.3.96, RAX45 before 1.0.3.96, RAX50 before 1.0.3.96, RAX75 before 1.0.4.120, RAX80 before 1.0.4.120, RBK752 before 3.2.17.12, RBK852 before 3.2.17.12, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, RBS850 before 3.2.17.12, RS400 before 1.5.1.80, and XR1000 before 1.0.0.58.

Affected products

NETGEAR Cbr750 Firmware: before 3.2.18.2 — fixed in 3.2.18.2
NETGEAR D6220 Firmware: before 1.0.0.68 — fixed in 1.0.0.68
Netgear D6400: before 1.0.0.102 — fixed in 1.0.0.102
NETGEAR D8500 Firmware: before 1.0.3.60 — fixed in 1.0.3.60
NETGEAR Lax20 Firmware: before 1.1.6.28 — fixed in 1.1.6.28
NETGEAR Mk62 Firmware: before 1.0.6.116 — fixed in 1.0.6.116
NETGEAR Mr60 Firmware: before 1.0.6.116 — fixed in 1.0.6.116
NETGEAR Ms60 Firmware: before 1.0.6.116 — fixed in 1.0.6.116
NETGEAR R6300 Firmware: before 1.0.4.50 — fixed in 1.0.4.50
NETGEAR R6400 Firmware: before 1.0.1.68; before 1.0.4.118 — fixed in 1.0.1.68, 1.0.4.118
NETGEAR R6700: before 1.0.4.118 — fixed in 1.0.4.118
NETGEAR R6900P Firmware: before 1.3.3.140 — fixed in 1.3.3.140
NETGEAR R7000: before 1.0.11.116 — fixed in 1.0.11.116
NETGEAR R7000P: before 1.3.3.140 — fixed in 1.3.3.140
NETGEAR R7850 Firmware: before 1.0.5.68 — fixed in 1.0.5.68
NETGEAR R7900 Firmware: before 1.0.4.38 — fixed in 1.0.4.38
NETGEAR R7900P Firmware: before 1.4.2.84 — fixed in 1.4.2.84
NETGEAR R7960P Firmware: before 1.4.2.84 — fixed in 1.4.2.84
NETGEAR R8000 Firmware: before 1.0.4.68 — fixed in 1.0.4.68
NETGEAR R8000P Firmware: before 1.4.2.84 — fixed in 1.4.2.84
NETGEAR Rax15 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
NETGEAR Rax200 Firmware: before 1.0.4.120 — fixed in 1.0.4.120
NETGEAR Rax20 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
NETGEAR Rax35 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
NETGEAR Rax40 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
Netgear RAX43: before 1.0.3.96 — fixed in 1.0.3.96
NETGEAR Rax45 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
NETGEAR Rax50 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
NETGEAR Rax75 Firmware: before 1.0.4.120 — fixed in 1.0.4.120
NETGEAR Rax80 Firmware: before 1.0.4.120 — fixed in 1.0.4.120

How to fix

Upgrade to a fixed version: NETGEAR Cbr750 Firmware 3.2.18.2; NETGEAR D6220 Firmware 1.0.0.68; Netgear D6400 1.0.0.102; NETGEAR D8500 Firmware 1.0.3.60; NETGEAR Lax20 Firmware 1.1.6.28; NETGEAR Mk62 Firmware 1.0.6.116; NETGEAR Mr60 Firmware 1.0.6.116; NETGEAR Ms60 Firmware 1.0.6.116; NETGEAR R6300 Firmware 1.0.4.50; NETGEAR R6400 Firmware 1.0.1.68, 1.0.4.118; NETGEAR R6700 1.0.4.118; NETGEAR R6900P Firmware 1.3.3.140. Check the vendor advisory for mitigations.

References

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