Description

The Ebyte device does not adequately verify the origin or authenticity of requests submitted to the web management interface. An unauthenticated remote attacker could persuade an authenticated administrator to visit a crafted page, causing unauthorized configuration changes or a disruption of device availability.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-28T00:18:14.147Z",
  "pubdate": "2026-08-28T00:18:14.147Z",
  "executiveSummary": "The Ebyte web management interface is susceptible to a Cross-Site Request Forgery (CSRF) vulnerability due to the absence of robust request origin and authenticity verification mechanisms.\nThis flaw allows a remote, unauthenticated attacker to execute unauthorized commands or configuration modifications on behalf of an authenticated administrator.\nThe vulnerability poses significant risk to device integrity and availability, as an attacker can manipulate sensitive settings without the administrator's knowledge or consent.\nExploitation requires the attacker to successfully induce an authenticated administrator to interact with a malicious, crafted webpage while maintaining an active session with the target device.\nThe scope of impact includes unauthorized system reconfigurations and the potential for a complete denial-of-service, compromising the operational continuity of the affected hardware.",
  "technicalDetails": "The root cause of this vulnerability lies in the implementation of the Ebyte web management interface, which fails to implement cryptographically secure, per-request, or per-session anti-CSRF tokens (such as Synchronizer Token Pattern).\nWithout mechanisms to validate the integrity and source of state-changing HTTP requests—specifically POST, PUT, or DELETE operations—the application assumes that any request received from an authenticated browser session is legitimate.\nThe attack flow initiates when an attacker creates a malicious webpage containing a hidden form or a scripted fetch request designed to target the device's web management interface endpoints. This payload is configured to execute specific administrative commands, such as changing system passwords, modifying network settings, or initiating a device reboot.\nWhen an authenticated administrator navigates to the attacker-controlled page, the browser automatically attaches the administrator's session cookies to the forged request sent to the Ebyte interface.\nSince the target device performs no origin verification (e.g., checking the 'Origin' or 'Referer' headers) or authenticity verification, it processes the request as if it were initiated by the administrator through the legitimate management dashboard.\nThe vulnerable component is the web-based administrative console that processes HTTP requests without validating anti-forgery tokens or enforcing strict origin policies. This facilitates a successful exploit as long as the victim's session remains active.\nPost-exploitation impact is severe, allowing the attacker to bypass access controls, alter system parameters, or disrupt service availability. Because the request is authenticated by the victim’s existing session, the Ebyte device treats the unauthorized input as a trusted command originating from the authorized administrator.\nThis vulnerability is restricted to environments where the web interface is exposed to a network reachable by the victim and where a valid administrative session is present at the time of the forged request delivery."
}