CVE-2021-45594

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% 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-77

Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects RBS50Y before 2.7.3.22, RBR20 before 2.7.3.22, RBR40 before 2.7.3.22, RBR50 before 2.7.3.22, RBS20 before 2.7.3.22, RBS40 before 2.7.3.22, RBS50 before 2.7.3.22, RBK20 before 2.7.3.22, RBK40 before 2.7.3.22, and RBK50 before 2.7.3.22.

Affected products

NETGEAR Rbk20 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbk40 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbk50 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbr20 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbr40 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbr50 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbs20 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbs40 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbs50 Firmware: before 2.7.3.22 — fixed in 2.7.3.22
NETGEAR Rbs50Y Firmware: before 2.7.3.22 — fixed in 2.7.3.22

How to fix

Upgrade to a fixed version: NETGEAR Rbk20 Firmware 2.7.3.22; NETGEAR Rbk40 Firmware 2.7.3.22; NETGEAR Rbk50 Firmware 2.7.3.22; NETGEAR Rbr20 Firmware 2.7.3.22; NETGEAR Rbr40 Firmware 2.7.3.22; NETGEAR Rbr50 Firmware 2.7.3.22; NETGEAR Rbs20 Firmware 2.7.3.22; NETGEAR Rbs40 Firmware 2.7.3.22; NETGEAR Rbs50 Firmware 2.7.3.22; NETGEAR Rbs50Y Firmware 2.7.3.22. Check the vendor advisory for mitigations.

References

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