What’s Vulnerable › Vulnerabilities

CVE-2021-45547

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% 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 R7850 before 1.0.5.74, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, RAX200 before 1.0.4.120, 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, and RBS850 before 3.2.17.12.

Affected products

• NETGEAR R7850 Firmware: before 1.0.5.74 — fixed in 1.0.5.74
• 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 1.0.4.74 — 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 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 Rbk752 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbk852 Firmware: before 3.2.17.12 — fixed in 3.2.17.12
• NETGEAR Rbr750 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 Orbi Satellite RBS750: 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 R7850 Firmware 1.0.5.74; NETGEAR R7900P Firmware 1.4.2.84; NETGEAR R7960P Firmware 1.4.2.84; NETGEAR R8000 Firmware 1.0.4.74; NETGEAR R8000P Firmware 1.4.2.84; NETGEAR Rax200 Firmware 1.0.4.120; NETGEAR Rax75 Firmware 1.0.4.120; NETGEAR Rax80 Firmware 1.0.4.120; NETGEAR Rbk752 Firmware 3.2.17.12; NETGEAR Rbk852 Firmware 3.2.17.12; NETGEAR Rbr750 Firmware 3.2.17.12; NETGEAR Rbr850 Firmware 3.2.17.12. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000064525/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0567
• https://kb.netgear.com/000064525/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0567

Get alerted when CVE-2021-45547 or the next vulnerability affects your stack