Description

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.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.8",
  "pubDate": "2026-08-28T00:18:11.273Z",
  "pubdate": "2026-08-28T00:18:11.273Z",
  "executiveSummary": "This vulnerability involves a critical failure in the Ebyte device web management interface to consistently enforce authentication mechanisms, resulting in an authentication bypass flaw.\nThe issue permits unauthenticated remote attackers to interact with administrative functionalities, exposing the device to unauthorized configuration changes, sensitive data exfiltration, and service disruption.\nThe vulnerability resides within the device's web management interface, which serves as the primary control plane for system operations.\nThe risk is severe as it allows remote adversaries to bypass security controls without valid credentials, potentially compromising the integrity and availability of the underlying industrial or networking hardware.\nThe lack of enforced authentication indicates a significant security oversight in the session management logic of the web interface.\nAttackers can leverage this flaw over the network to gain full administrative control, which may facilitate persistent unauthorized access or manipulation of device settings.",
  "technicalDetails": "The root cause of this vulnerability is an inconsistent implementation of session validation and access control within the Ebyte web management interface. While the application is designed to require administrative authentication for sensitive endpoints, the enforcement mechanism fails to validate session tokens or authentication status for specific administrative functions.\nThe vulnerable component is the HTTP/HTTPS web management interface exposed by the Ebyte device firmware. The web server process fails to perform server-side verification of authentication credentials before routing requests to administrative controllers.\nAttack flow typically begins with an unauthenticated remote attacker identifying the target IP address and discovering the web management portal. By bypassing the initial login page or directly requesting identified administrative endpoints, the attacker can manipulate the state of the system.\nExploitation occurs when an attacker crafts unauthorized HTTP requests directed at sensitive URIs governing device configuration or system maintenance. Since the application fails to verify the session integrity, these requests are processed as legitimate administrative actions.\nThe payload behavior involves the transmission of configuration parameters or control commands via standard HTTP methods (such as GET or POST). Because the device does not require prior authentication, the backend administrative functions process these inputs as trusted commands, allowing for the unauthorized modification of device parameters, reset of system states, or retrieval of configuration files that may contain credentials or network topology details.\nThe network exposure is high, as the web interface is often accessible via the device's default network interface. There are no privilege requirements to initiate this attack, as the flaw eliminates the need for valid user accounts. Post-exploitation impact includes full system takeover, potential denial-of-service through resource exhaustion or disabling of key functions, and the use of the device as a pivot point for further network reconnaissance or lateral movement within the environment."
}