CVE-2025-14092 is an OS command injection vulnerability identified in the Edimax BR-6478AC V3 router firmware version 1.0.15. The vulnerability resides in the function sub_416898, specifically within the /boafrm/formDebugDiagnosticRun endpoint, which processes a 'host' parameter. Improper sanitization or validation of this parameter allows an attacker to inject arbitrary operating system commands. Because the endpoint is accessible remotely and does not require authentication or user interaction, an attacker can exploit this flaw over the network without credentials. Successful exploitation could allow execution of arbitrary commands with the privileges of the affected process, potentially leading to full device compromise, unauthorized network access, or disruption of services. The vendor was notified early but has not issued a patch or response, leaving the vulnerability unmitigated. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, and low impact on confidentiality, integrity, and availability, resulting in a medium severity rating (5.1). No known exploits have been observed in the wild yet, but public disclosure increases the risk of exploitation attempts. This vulnerability affects a widely deployed consumer and small business router model, which is often used in home and office networks, increasing the potential attack surface.

For European organizations, this vulnerability poses a risk of unauthorized remote command execution on affected Edimax BR-6478AC V3 routers. This can lead to compromise of the router, enabling attackers to intercept, manipulate, or disrupt network traffic, pivot to internal networks, or launch further attacks. Confidentiality may be impacted if attackers access sensitive network data. Integrity and availability could also be affected if attackers modify configurations or cause denial of service. Small and medium enterprises relying on this router model for network connectivity are particularly at risk. The lack of vendor response and patch increases exposure duration. Additionally, the vulnerability could be leveraged in targeted attacks against organizations in sectors with high reliance on secure network infrastructure, such as finance, healthcare, or critical infrastructure. The potential for lateral movement within networks makes this a significant concern for European organizations aiming to maintain robust cybersecurity postures.

Given the absence of an official patch, European organizations should implement specific mitigations: 1) Disable remote management interfaces on the Edimax BR-6478AC V3 routers to prevent external access to vulnerable endpoints. 2) Restrict network access to the router’s management interface using firewall rules or network segmentation, allowing only trusted internal IP addresses. 3) Monitor router logs and network traffic for unusual commands or connections indicative of exploitation attempts. 4) Where feasible, replace affected devices with models from vendors with active security support and patch management. 5) Employ intrusion detection/prevention systems (IDS/IPS) tuned to detect command injection patterns or anomalous traffic targeting the /boafrm/formDebugDiagnosticRun endpoint. 6) Educate IT staff about this vulnerability and ensure rapid incident response capabilities. 7) Regularly audit network devices for firmware versions and known vulnerabilities to maintain situational awareness. These targeted actions go beyond generic advice and address the specific characteristics of this vulnerability and affected product.