CVE-2025-27449 in MEAC300-FNADE4
Summary
by MITRE • 07/03/2025
The MEAC300-FNADE4 does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it susceptible to brute-force attacks.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 02/06/2026
The MEAC300-FNADE4 device presents a critical security weakness in its authentication mechanism that directly exposes it to brute-force attack vectors. This vulnerability stems from the absence of effective rate-limiting and account lockout policies that would normally prevent attackers from systematically guessing valid credentials through automated means. The device fails to implement proper session management controls that would detect and mitigate repeated failed authentication attempts, creating an exploitable condition that aligns with common security misconfigurations identified in industrial control systems. The lack of such protective measures represents a fundamental flaw in the device's security architecture, particularly concerning its authentication framework.
This technical deficiency creates a pathway for malicious actors to conduct automated credential guessing attacks with minimal risk of detection or account lockout. The vulnerability manifests as a complete absence of rate-limiting mechanisms that would typically be implemented to prevent rapid successive authentication attempts. Attackers can exploit this weakness by employing automated tools to cycle through common username and password combinations, leveraging the device's lack of protective countermeasures to eventually gain unauthorized access. The vulnerability is classified under the CWE-307 weakness category, which specifically addresses inadequate protection against brute-force attacks and insufficient account lockout mechanisms. This weakness directly impacts the device's ability to maintain secure authentication boundaries and represents a significant escalation path for potential attackers.
The operational impact of this vulnerability extends beyond simple unauthorized access, potentially compromising the entire industrial control system infrastructure. An attacker who successfully exploits this weakness can gain persistent access to the device, potentially leading to broader network infiltration and operational disruption. The vulnerability affects the device's ability to maintain confidentiality, integrity, and availability of the systems it controls, creating a risk that aligns with the ATT&CK framework's credential access and persistence tactics. Organizations using this device face heightened risk of operational technology compromise, particularly in environments where industrial control systems are connected to corporate networks. The vulnerability's exploitation could lead to unauthorized configuration changes, data exfiltration, or even physical system manipulation, making it particularly concerning for critical infrastructure deployments.
Mitigation strategies should focus on implementing proper rate-limiting mechanisms and account lockout policies that would prevent automated credential guessing attacks. Network segmentation and access control measures should be implemented to limit the potential impact of successful exploitation, while regular security assessments should be conducted to identify similar vulnerabilities in other industrial control system components. The device should be configured with strong authentication policies that include account lockout after failed attempts, minimum password complexity requirements, and regular credential rotation schedules. Additionally, network monitoring should be enhanced to detect unusual authentication patterns that may indicate brute-force attack activity. Organizations should also consider implementing multi-factor authentication mechanisms where possible, as this would provide additional protection layers beyond the basic username and password authentication that this vulnerability exploits. The vulnerability demonstrates the critical importance of implementing proper authentication controls in industrial environments, as identified in various cybersecurity frameworks and standards including NIST SP 800-53 and ISO 27001 requirements for access control management.