CVE-2021-38514
Certain NETGEAR devices are affected by authentication bypass. This affects D3600 before 1.0.0.72, D6000 before 1.0.0.72, D6100 before 1.0.0.63, D6200 before 1.1.00.34, D6220 before 1.0.0.48, D6400 before 1.0.0.86, D7000 before 1.0.1.70, D7000v2 before 1.0.0.52, D7800 before 1.0.1.56, D8500 before 1.0.3.44, DC112A before 1.0.0.42, DGN2200v4 before 1.0.0.108, DGND2200Bv4 before 1.0.0.108, EX2700 before 1.0.1.48, EX3700 before 1.0.0.76, EX3800 before 1.0.0.76, EX6000 before 1.0.0.38, EX6100 before 1.0.2.24, EX6100v2 before 1.0.1.76, EX6120 before 1.0.0.42, EX6130 before 1.0.0.28, EX6150v1 before 1.0.0.42, EX6150v2 before 1.0.1.76, EX6200 before 1.0.3.88, EX6200v2 before 1.0.1.72, EX6400 before 1.0.2.136, EX7000 before 1.0.0.66, EX7300 before 1.0.2.136, EX8000 before 1.0.1.180, RBK50 before 2.1.4.10, RBR50 before 2.1.4.10, RBS50 before 2.1.4.10, RBK40 before 2.1.4.10, RBR40 before 2.1.4.10, RBS40 before 2.1.4.10, RBW30 before 2.2.1.204, PR2000 before 1.0.0.28, R6020 before 1.0.0.38, R6080 before 1.0.0.38, R6050 before 1.0.1.18, JR6150 before 1.0.1.18, R6120 before 1.0.0.46, R6220 before 1.1.0.86, R6250 before 1.0.4.34, R6300v2 before 1.0.4.32, R6400 before 1.0.1.44, R6400v2 before 1.0.2.62, R6700 before 1.0.1.48, R6700v2 before 1.2.0.36, R6800 before 1.2.0.36, R6900v2 before 1.2.0.36, R6900 before 1.0.1.48, R7000 before 1.0.9.34, R6900P before 1.3.1.64, R7000P before 1.3.1.64, R7100LG before 1.0.0.48, R7300DST before 1.0.0.70, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, R7900 before 1.0.3.8, R8000 before 1.0.4.28, R7900P before 1.4.1.30, R8000P before 1.4.1.30, R8300 before 1.0.2.128, R8500 before 1.0.2.128, R9000 before 1.0.3.10, RBS40V before 2.2.0.58, RBK50V before 2.2.0.58, WN2000RPTv3 before 1.0.1.32, WN2500RPv2 before 1.0.1.54, WN3000RPv3 before 1.0.2.78, WN3100RPv2 before 1.0.0.66, WNDR3400v3 before 1.0.1.22, WNDR3700v4 before 1.0.2.102, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, WNR2000v5 (R2000) before 1.0.0.66, WNR2020 before 1.1.0.62, WNR2050 before 1.1.0.62, WNR3500Lv2 before 1.2.0.62, and XR500 before 2.3.2.22.
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Frequently Asked Questions
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.