What’s Vulnerable › Vulnerabilities

CVE-2021-45543

• 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 R8000 before 1.0.4.74, RAX200 before 1.0.4.120, R8000P before 1.4.2.84, R7900P before 1.4.2.84, RBR850 before 3.2.17.12, RBS850 before 3.2.17.12, and RBK852 before 3.2.17.12.

Affected products

• NETGEAR R7900P Firmware: 1.4.2.84
• NETGEAR R8000 Firmware: before 1.0.4.74 — fixed in 1.0.4.74
• NETGEAR R8000P Firmware: before 1.4.2.84 — fixed in 1.4.2.84
• NETGEAR Rax200 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 R8000 Firmware 1.0.4.74; NETGEAR R8000P Firmware 1.4.2.84; NETGEAR Rax200 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/000064517/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0541
• https://kb.netgear.com/000064517/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0541

Get alerted when CVE-2021-45543 or the next vulnerability affects your stack