What’s Vulnerable › Vulnerabilities
CVE-2021-45621
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.0% 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 unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 3.2.18.2, EAX20 before 1.0.0.58, EAX80 before 1.0.1.68, EX3700 before 1.0.0.94, EX3800 before 1.0.0.94, EX6120 before 1.0.0.64, EX6130 before 1.0.0.44, EX7000 before 1.0.1.104, EX7500 before 1.0.0.74, LAX20 before 1.1.6.28, MR60 before 1.0.6.116, MS60 before 1.0.6.116, R6300v2 before 1.0.4.52, R6400 before 1.0.1.70, R6400v2 before 1.0.4.106, R6700v3 before 1.0.4.106, R6900P before 1.3.3.140, R7000 before 1.0.11.126, R7000P before 1.3.3.140, R7100LG before 1.0.0.72, R7850 before 1.0.5.74, R7900 before 1.0.4.46, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, R8300 before 1.0.2.154, R8500 before 1.0.2.154, 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, RBK852 before 3.2.17.12, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, RBS850 before 3.2.17.12, RBS850 before 3.2.17.12, RS400 before 1.5.1.80, XR1000 before 1.0.0.58, and XR300 before 1.0.3.68.
Affected products
- NETGEAR Cbr40 Firmware: before 2.5.0.24 — fixed in 2.5.0.24
- NETGEAR Cbr750 Firmware: before 3.2.18.2 — fixed in 3.2.18.2
- NETGEAR Eax20 Firmware: before 1.0.0.58 — fixed in 1.0.0.58
- NETGEAR Eax80 Firmware: before 1.0.1.68 — fixed in 1.0.1.68
- NETGEAR EX3700: before 1.0.0.94 — fixed in 1.0.0.94
- NETGEAR Ex3800 Firmware: before 1.0.0.94 — fixed in 1.0.0.94
- NETGEAR EX6120: before 1.0.0.64 — fixed in 1.0.0.64
- NETGEAR Ex6130 Firmware: before 1.0.0.44 — fixed in 1.0.0.44
- NETGEAR Ex7000 Firmware: before 1.0.1.104 — fixed in 1.0.1.104
- NETGEAR Ex7500 Firmware: before 1.0.0.74 — fixed in 1.0.0.74
- NETGEAR Lax20 Firmware: before 1.1.6.28 — fixed in 1.1.6.28
- 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 R6300V2 Firmware: before 1.0.4.52 — fixed in 1.0.4.52
- NETGEAR R6400 Firmware: before 1.0.1.70 — fixed in 1.0.1.70
- NETGEAR R6400V2 Firmware: before 1.0.4.106 — fixed in 1.0.4.106
- NETGEAR R6700V3 Firmware: before 1.0.4.106 — fixed in 1.0.4.106
- NETGEAR R6900P Firmware: before 1.3.3.140 — fixed in 1.3.3.140
- NETGEAR R7000: before 1.0.11.126 — fixed in 1.0.11.126
- NETGEAR R7000P: before 1.3.3.140 — fixed in 1.3.3.140
- NETGEAR R7100Lg Firmware: before 1.0.0.72 — fixed in 1.0.0.72
- NETGEAR R7850 Firmware: before 1.0.5.74 — fixed in 1.0.5.74
- NETGEAR R7900 Firmware: before 1.0.4.46 — fixed in 1.0.4.46
- 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 R8300 Firmware: before 1.0.2.154 — fixed in 1.0.2.154
- NETGEAR R8500 Firmware: before 1.0.2.154 — fixed in 1.0.2.154
- NETGEAR Rax15 Firmware: before 1.0.3.96 — fixed in 1.0.3.96
How to fix
Upgrade to a fixed version: NETGEAR Cbr40 Firmware 2.5.0.24; NETGEAR Cbr750 Firmware 3.2.18.2; NETGEAR Eax20 Firmware 1.0.0.58; NETGEAR Eax80 Firmware 1.0.1.68; NETGEAR EX3700 1.0.0.94; NETGEAR Ex3800 Firmware 1.0.0.94; NETGEAR EX6120 1.0.0.64; NETGEAR Ex6130 Firmware 1.0.0.44; NETGEAR Ex7000 Firmware 1.0.1.104; NETGEAR Ex7500 Firmware 1.0.0.74; NETGEAR Lax20 Firmware 1.1.6.28; NETGEAR Mr60 Firmware 1.0.6.116. Check the vendor advisory for mitigations.
References
- https://kb.netgear.com/000064523/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2020-0562
- https://kb.netgear.com/000064523/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2020-0562
Get alerted when CVE-2021-45621 or the next vulnerability affects your stack