CVE-2026-73125 in NE2-D11
Summary
by MITRE • 08/28/2026
Ebyte device web management interface does not consistently enforce authentication before granting access to administrative functionality. An unauthenticated remote attacker could access sensitive configuration information, modify device settings, or disrupt availability.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 08/28/2026
The vulnerability identified in the Ebyte device web management interface represents a critical failure in access control mechanisms, specifically categorized under CWE-287: Improper Authentication. This flaw indicates that the application fails to consistently verify the identity of users attempting to interact with administrative functions. In secure systems, every request directed toward sensitive endpoints must be validated against an active session or valid credentials before any logic is executed. The absence of this enforcement allows unauthenticated remote attackers to bypass security controls entirely, treating protected resources as if they were public-facing data. This type of misconfiguration is particularly dangerous in Internet of Things (IoT) and industrial control systems where devices often operate with limited computational overhead but manage critical physical processes or sensitive network configurations.
From a technical perspective, the root cause lies in the web server's routing logic or the application framework's middleware configuration. The developer likely failed to apply authentication filters to specific API endpoints or administrative pages, assuming that other layers of security would prevent unauthorized access. Alternatively, session management tokens may not be properly validated on each request, allowing attackers to replay old sessions or simply omit credentials from HTTP headers. This oversight creates a direct path for exploitation where an attacker can send crafted HTTP requests directly to the vulnerable URLs without needing valid login information. The consistency of this flaw suggests it is systemic across multiple administrative features rather than isolated to a single page, amplifying the potential scope of impact significantly.
The operational impact of this vulnerability is severe and multifaceted. First, unauthorized access to sensitive configuration information can lead to data leakage, exposing network topology details, IP addresses, firmware versions, or proprietary settings that could aid in further targeted attacks. Second, the ability to modify device settings allows an attacker to alter critical parameters such as firewall rules, DNS configurations, or communication protocols. This manipulation can effectively turn the compromised device into a pivot point for lateral movement within a network or disrupt legitimate services by changing operational thresholds. Third, the potential to disrupt availability means that attackers could exhaust system resources, reset devices repeatedly causing denial of service conditions, or corrupt firmware states leading to permanent hardware malfunction in some cases.
This vulnerability aligns with several tactics defined in the MITRE ATT&CK framework for both enterprise and IoT environments. It directly supports the Initial Access tactic by allowing unauthenticated entry into a trusted zone. Once inside, it facilitates Privilege Escalation as the attacker gains administrative rights without proper credentials. Furthermore, modifications to device settings map to Configuration Change techniques under Defense Evasion or Impact tactics, depending on whether the goal is to hide tracks or cause damage. The ability to disrupt availability also falls squarely under the Impact category, specifically Resource Hijacking or Denial of Service. Understanding these mappings helps security teams prioritize remediation efforts based on broader threat intelligence and attack lifecycle stages.
Mitigation strategies must focus on immediate access control enforcement and long-term architectural improvements. Immediately, administrators should restrict web interface access to trusted IP addresses using network-level firewalls if possible, as this provides a layer of defense in depth even if the application logic remains flawed. However, the definitive fix requires code changes to ensure that all administrative endpoints enforce strict authentication checks before processing any requests. This involves implementing robust session management, validating tokens on every request, and ensuring that role-based access control is correctly applied to all sensitive functions. Additionally, deploying a Web Application Firewall can help detect and block automated exploitation attempts by identifying patterns associated with unauthenticated access probes. Regular security audits and static code analysis should be integrated into the development lifecycle to prevent similar authentication bypasses in future firmware releases.