CVE-2025-65427 identifies a security vulnerability in the Dbit N300 T1 Pro Easy Setup Wireless Wi-Fi Router, specifically in firmware version V1.0.0. The vulnerability arises because the router's /api/login endpoint does not implement any form of rate limiting, which is a critical security control designed to prevent automated brute force attacks. Without rate limiting, an attacker can repeatedly attempt password guesses at high speed, facilitating password enumeration attacks to discover valid administrative credentials. This lack of protection significantly lowers the barrier for unauthorized access to the router's management interface. Once access is gained, an attacker could alter router configurations, intercept or redirect network traffic, or deploy further attacks within the network. Although no public exploits have been reported yet, the vulnerability's nature makes it a prime candidate for exploitation once discovered by malicious actors. The absence of a CVSS score means the severity must be inferred from the vulnerability's characteristics: it impacts confidentiality and integrity, requires no user interaction, and can be exploited remotely without authentication. The router is typically deployed in small office or home office environments, but its compromise can have cascading effects on connected devices and data privacy. The vulnerability underscores the importance of secure firmware design and the implementation of basic security controls such as rate limiting on authentication endpoints.

For European organizations, the exploitation of CVE-2025-65427 could lead to unauthorized administrative access to network routers, resulting in potential network-wide compromise. This could allow attackers to intercept sensitive communications, manipulate network traffic, or create persistent backdoors, undermining confidentiality, integrity, and availability of organizational data and services. Small and medium enterprises (SMEs) and home offices using this router model are particularly vulnerable, as they may lack advanced security monitoring and response capabilities. The breach could also facilitate lateral movement within corporate networks, increasing the risk of data breaches or ransomware attacks. Additionally, compromised routers could be leveraged as part of botnets for broader attacks, impacting network performance and reputation. The absence of rate limiting makes brute force attacks trivial, increasing the likelihood of successful exploitation. The impact is exacerbated in sectors with high data sensitivity or regulatory requirements, such as finance, healthcare, and critical infrastructure. Overall, the vulnerability poses a significant risk to network security posture and data protection obligations under European regulations like GDPR.

To mitigate CVE-2025-65427, organizations should immediately assess whether they deploy the Dbit N300 T1 Pro Easy Setup Wireless Wi-Fi Router with firmware version V1.0.0. If so, they should restrict access to the router's management interface by placing it behind secure network segments or VPNs to limit exposure. Network administrators should monitor login attempts for unusual patterns indicative of brute force attacks and implement intrusion detection systems capable of alerting on such activity. Enforcing strong, complex administrative passwords and changing default credentials is critical. Where possible, disable remote management or restrict it to trusted IP addresses. Until an official firmware patch is released, consider replacing vulnerable devices with models that implement proper security controls. Vendors should be engaged to provide timely patches that introduce rate limiting and other authentication protections. Additionally, organizations should educate users about the risks of weak passwords and the importance of network device security. Regular firmware updates and security audits should be institutionalized to prevent similar vulnerabilities.