CVE-2026-75814 in NE2-D11
Summary
by MITRE • 08/28/2026
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.
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Analysis
by VulDB Data Team • 08/28/2026
The vulnerability described constitutes a classic Cross-Site Request Forgery (CSRF) flaw within the web-based management interface of Ebyte devices. This security deficiency arises from the application's failure to adequately verify the origin or authenticity of incoming HTTP requests, specifically lacking robust mechanisms such as anti-CSRF tokens, strict SameSite cookie attributes, or rigorous validation of the Origin and Referer headers against an allow-listed domain. In a typical web architecture, session cookies are automatically included in every request made by the browser for that specific domain. When these cookies lack appropriate restrictions regarding cross-site requests, any malicious webpage visited by an authenticated user will inadvertently trigger state-changing actions on the target device without their explicit consent or knowledge.
From a technical perspective, this flaw allows an unauthenticated remote attacker to craft a malicious web page containing hidden forms or JavaScript-driven AJAX calls that point to the administrative endpoints of the Ebyte device. When an administrator, who is currently logged into the management interface with valid credentials, visits this crafted page, their browser automatically attaches the active session cookie to the forged requests. The server processes these requests as legitimate because it cannot distinguish them from genuine user-initiated actions due to the absence of additional authentication factors or request integrity checks. This bypasses standard access controls that rely solely on HTTP cookies for session management, effectively allowing an attacker to act with the privileges of the authenticated administrator.
The operational impact of this vulnerability is significant and multifaceted. Primarily, it enables unauthorized configuration changes, which could lead to the modification of network settings, firmware update URLs, or security parameters such as disabling firewalls or altering access control lists. Such alterations can compromise the integrity of the entire network segment connected through these devices. Furthermore, the attacker may exploit this capability to disrupt device availability by triggering factory resets, rebooting the system repeatedly, or configuring invalid IP addresses that render the device unreachable for legitimate management purposes. This denial-of-service aspect impacts operational continuity and requires manual intervention to restore normal functionality, thereby increasing maintenance costs and downtime risks in critical infrastructure environments.
In terms of industry standard classification, this vulnerability aligns with CWE-352: Cross-Site Request Forgery (CSRF). The attack vector is categorized under ATT&CK technique T1078: Valid Accounts, as the attacker leverages valid credentials held by an administrator to perform unauthorized actions. Additionally, it relates to CWE-942: Permissive Cross-domain Whitelist with User-Controlled Key if the device allows configuration of trusted origins without proper validation. The exploitation scenario also touches upon social engineering principles where user interaction is required, fitting within broader attack patterns involving诱骗 users into performing unintended actions.
To mitigate this vulnerability, developers and administrators must implement robust anti-CSRF protections at both the application and infrastructure levels. Application-level fixes include implementing synchronizer token patterns where each state-changing request requires a unique, unpredictable CSRF token that is validated server-side before processing. Additionally, setting cookies with the SameSite attribute to Strict or Lax prevents browsers from sending these cookies in cross-site requests by default. Infrastructure-level mitigations involve configuring web servers and load balancers to validate the Origin and Referer headers against an explicit whitelist of trusted domains, rejecting any request that does not match expected sources. Regular security audits and penetration testing focused on state-changing operations are also recommended to ensure no other endpoints remain susceptible to similar forgery attacks.