What’s Vulnerable › Vulnerabilities

CVE-2021-45542

• Severity: medium (CVSS 6.8 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: 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 RAX200 before 1.0.4.120, RAX75 before 1.0.4.120, RAX80 before 1.0.4.120, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

Affected products

• NETGEAR Rax200 Firmware: before 1.0.4.120 — fixed in 1.0.4.120
• 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
• NETGEAR Rbk852 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbr850 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbs850 Firmware: before 3.2.17.12 — fixed in 3.2.17.12

How to fix

Upgrade to a fixed version: NETGEAR Rax200 Firmware 1.0.4.120; NETGEAR Rax75 Firmware 1.0.4.120; NETGEAR Rax80 Firmware 1.0.4.120; NETGEAR Rbk852 Firmware 3.2.17.12; NETGEAR Rbr850 Firmware 3.2.17.12; NETGEAR Rbs850 Firmware 3.2.17.12. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000064143/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0540
• https://kb.netgear.com/000064143/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0540

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