CVE-2026-28778
Received Received - Intake

Hardcoded Credentials in IDC SFX Enable Root Remote Code Execution

Vulnerability report for CVE-2026-28778, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-03-04

Last updated on: 2026-03-17

Assigner: Gridware

Description

International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite Receiver contains undocumented, hardcoded/insecure credentials for the `xd` user account. A remote unauthenticated attacker can log in via FTP using these credentials. Because the `xd` user has write permissions to their home directory where root-executed binaries and symlinks (such as those invoked by `xdstartstop`) are stored, the attacker can overwrite these files or manipulate symlinks to achieve arbitrary code execution as the root user.

CVSS Scores

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Meta Information

Published
2026-03-04
Last Modified
2026-03-17
Generated
2026-07-06
AI Q&A
2026-03-04
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
datacast sfx2100_firmware *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-798 The product contains hard-coded credentials, such as a password or cryptographic key.

Attack-Flow Graph

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Executive Summary

The vulnerability exists in the International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite Receiver, which contains undocumented, hardcoded, and insecure credentials for the 'xd' user account.

A remote unauthenticated attacker can use these credentials to log in via FTP.

Since the 'xd' user has write permissions to their home directory where root-executed binaries and symbolic links (such as those used by 'xdstartstop') are stored, the attacker can overwrite these files or manipulate the symlinks.

This allows the attacker to achieve arbitrary code execution with root privileges.

Impact Analysis

This vulnerability can have severe impacts because it allows a remote unauthenticated attacker to gain root-level control over the affected device.

With root privileges, the attacker can execute arbitrary code, potentially leading to full system compromise, unauthorized access to sensitive data, disruption of services, or use of the device as a foothold for further attacks within a network.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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