CVE-2026-11814 in BE9300
Summary
by MITRE • 08/11/2026
A command injection vulnerability in the listed NETGEAR models allows a network-adjacent attacker with the ability to intercept and modify local network traffic (attacker-in-the-middle) to compromise the confidentiality and integrity of the affected device. This issue is limited to certain region-specific SKUs.
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Analysis
by VulDB Data Team • 08/11/2026
This command injection vulnerability represents a critical security flaw in specific NETGEAR router models that enables remote code execution through carefully crafted network traffic manipulation. The vulnerability stems from insufficient input validation and improper sanitization of user-supplied data within the affected device firmware, creating an attack vector where malicious actors can inject arbitrary commands into the system's processing pipeline. The flaw operates at the application layer of the network stack, specifically targeting the device's web management interface or command processing mechanisms that handle network configuration parameters.
The technical implementation of this vulnerability allows an attacker positioned within the local network to intercept and modify traffic flows between network devices and the affected router. Through man-in-the-middle techniques combined with command injection payloads, adversaries can execute arbitrary code on the vulnerable device with the privileges of the affected service account. This typically translates to root-level access or administrative control over the router's core functions, enabling complete compromise of the network infrastructure. The vulnerability's exploitation requires only network adjacency and the ability to manipulate traffic flow, making it particularly dangerous in environments where such capabilities are not properly restricted.
The operational impact of this vulnerability extends beyond simple device compromise to encompass full network infiltration and data exfiltration capabilities. Once successfully exploited, attackers can modify routing tables, redirect traffic through malicious intermediaries, disable security features, and establish persistent backdoors within the network infrastructure. The affected devices become potential entry points for broader network attacks, allowing lateral movement and privilege escalation across connected systems. Furthermore, the compromised device can be used to perform reconnaissance activities against internal network segments, effectively serving as a pivot point for more extensive infiltration operations.
Mitigation strategies must address both immediate defensive measures and long-term architectural improvements. Organizations should implement network segmentation to isolate critical infrastructure from general network traffic, deploy intrusion detection systems to monitor for suspicious command injection patterns, and establish robust network access controls to limit device management interfaces to authorized personnel only. Regular firmware updates should be prioritized, with particular attention to region-specific SKUs that may contain the vulnerable code variants. Network administrators should also consider implementing traffic monitoring solutions that can detect anomalous command execution patterns and establish secure remote access protocols that do not rely on potentially vulnerable web interfaces.
This vulnerability aligns with multiple CWE categories including CWE-77, CWE-88, and CWE-94, which specifically address command injection flaws in software systems. From an ATT&CK framework perspective, the exploitation maps to techniques such as T1059.001 for command and scripting interpreter and T1566 for phishing with malicious attachments or links, though the initial compromise occurs through network traffic manipulation rather than traditional social engineering vectors. The attack surface is particularly concerning given that many enterprise networks lack proper network micro-segmentation controls, allowing successful exploitation to cascade into broader infrastructure compromises.
The regional SKU limitation suggests that manufacturers may have implemented different firmware versions or security configurations across various markets, creating inconsistent security postures within the same product line. This inconsistency often stems from differing regulatory requirements, cost considerations in manufacturing, or delayed security updates for specific regions. Security professionals must maintain awareness of these regional variations when conducting vulnerability assessments and should prioritize patch management efforts for all affected SKUs regardless of geographic distribution to ensure comprehensive protection across enterprise networks.