CVE-2026-28772 is a reflected Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the International Datacasting Corporation (IDC) SFX Series SuperFlex SatelliteReceiver Web Management Interface version 101. The vulnerability resides in the /IDC_Logging/index.cgi endpoint, specifically in the handling of the submitType parameter. This parameter is reflected directly into the Document Object Model (DOM) without proper neutralization or escaping of input, enabling an attacker to inject arbitrary HTML or JavaScript code. Because the vulnerability is reflected, exploitation requires an attacker to craft a malicious URL or payload that, when visited or triggered by a legitimate user, executes the injected script in the context of the victim's browser. The vulnerability does not require authentication or privileges, increasing its accessibility to remote attackers. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but user interaction is necessary (UI:A). The impact on confidentiality and integrity is low to limited, as the vulnerability primarily enables script execution within the user's session context, potentially leading to session hijacking, phishing, or unauthorized actions within the web management interface. Availability impact is none. No known public exploits have been reported yet, but the presence of this vulnerability in satellite receiver management interfaces is concerning due to the critical nature of satellite communication infrastructure. The lack of available patches at the time of publication necessitates immediate attention to input validation and monitoring for suspicious activity.

The vulnerability could allow remote attackers to execute arbitrary scripts in the context of users accessing the affected web management interface, potentially leading to session hijacking, theft of sensitive information such as credentials, or unauthorized configuration changes. Given the critical role of satellite receivers in communication and broadcasting, exploitation could disrupt operational integrity or enable further attacks on satellite infrastructure. Although the impact on system availability is minimal, the compromise of confidentiality and integrity could have cascading effects on organizations relying on these devices for data transmission and management. The medium CVSS score reflects moderate risk, but the strategic importance of satellite communications elevates the potential operational impact. Organizations worldwide using IDC SFX Series devices could face targeted attacks, especially in sectors like broadcasting, defense, and emergency services.

1. Implement strict input validation and output encoding on the submitType parameter and all user-controllable inputs in the web management interface to prevent script injection. 2. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts within the web interface. 3. Restrict access to the management interface via network segmentation and firewall rules, limiting exposure to trusted IP addresses only. 4. Monitor web server logs for unusual or suspicious requests targeting the /IDC_Logging/index.cgi endpoint, especially those containing script tags or encoded payloads. 5. Educate users and administrators about the risks of clicking on untrusted links that could exploit reflected XSS vulnerabilities. 6. Coordinate with IDC for timely patch releases and apply updates as soon as they become available. 7. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block XSS payloads targeting this endpoint. 8. Regularly review and audit the web management interface codebase for similar input handling issues.