CVE-2026-28769 is a path traversal vulnerability classified under CWE-22, found in the web management interface of the International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite Receiver. The vulnerability specifically exists in the /IDC_Logging/checkifdone.cgi script, which improperly limits the pathname input via the 'file' parameter. Due to insecure Perl file path handling, an authenticated attacker can manipulate this parameter to traverse directories outside the intended restricted directory, enabling enumeration of arbitrary files on the underlying filesystem. The vulnerability allows attackers to confirm the existence of files by observing the success or failure status of backup operations triggered through the interface. This flaw does not require user interaction but does require the attacker to be authenticated to the web management portal. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity, with network attack vector, low attack complexity, and low impact on confidentiality. No known public exploits have been reported yet. The affected product is used in satellite broadcast environments, where unauthorized file enumeration could lead to leakage of sensitive configuration or operational data. The vulnerability highlights the risks of improper input validation and insecure file handling in web management interfaces of critical infrastructure devices.

The primary impact of this vulnerability is unauthorized disclosure of sensitive files on the satellite receiver's underlying filesystem. An attacker with valid credentials can enumerate files, potentially accessing configuration files, logs, or other sensitive data that could facilitate further attacks or intelligence gathering. While the vulnerability does not directly allow remote code execution or denial of service, the information disclosure could aid attackers in escalating privileges or compromising the device. For organizations relying on IDC SFX Series receivers, especially those in broadcast, defense, or critical communication sectors, this could lead to operational disruptions or exposure of sensitive operational data. The requirement for authentication limits the scope somewhat, but insider threats or compromised credentials could still enable exploitation. The lack of user interaction and low attack complexity increase the risk of exploitation once credentials are obtained. Overall, this vulnerability poses a moderate risk to confidentiality and operational security of satellite broadcast infrastructure.

To mitigate CVE-2026-28769, organizations should first check for and apply any patches or firmware updates released by International Datacasting Corporation addressing this vulnerability. In the absence of official patches, administrators should restrict access to the web management interface to trusted networks and users only, employing network segmentation and strong access controls. Implement multi-factor authentication to reduce the risk of credential compromise. Monitor and audit authentication logs for suspicious access patterns. Consider deploying web application firewalls (WAFs) with custom rules to detect and block directory traversal attempts targeting the 'file' parameter in the /IDC_Logging/checkifdone.cgi script. Additionally, review and harden Perl script configurations and file path handling mechanisms to ensure proper input validation and sanitization. Regularly conduct security assessments and penetration tests on the management interface to detect similar vulnerabilities. Finally, educate administrators about the risks of credential compromise and enforce strong password policies.