CVE-2021-45621
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
An unauthenticated command injection vulnerability in multiple NETGEAR devices allows remote attackers to execute arbitrary commands.
Vulnerability
A pre-authentication command injection vulnerability exists in the web interface of numerous NETGEAR routers, extenders, and WiFi systems. An unauthenticated attacker can inject arbitrary operating system commands through a crafted request. Affected models include CBR40 before 2.5.0.24, CBR750 before 3.2.18.2, EAX20 before 1.0.0.58, and many others as listed in the advisory [1].
Exploitation
An attacker does not need any authentication or prior access. By sending a specially crafted HTTP request to the vulnerable device's management interface, the attacker can inject commands that are executed with root privileges. No user interaction is required.
Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary commands on the device, leading to full compromise of the device. This can result in information disclosure, denial of service, or use of the device as a pivot point for further attacks.
Mitigation
NETGEAR has released firmware updates for all affected models. Users should update to the fixed versions specified in the advisory [1]. For example, CBR40 should be updated to 2.5.0.24 or later, CBR750 to 3.2.18.2, etc. No workarounds are provided; updating is the only mitigation.
AI Insight generated on May 27, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
4- NETGEAR/NETGEAR devicesdescription
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1News mentions
0No linked articles in our index yet.