CVE-2026-28778 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Datacast	Sfx2100 Firmware	-
Datacast	Sfx2100	-

Related Weaknesses (CWE)

CWE-798

References

https://www.abdulmhsblog.com/posts/sfx2100-vulns/ExploitThird Party Advisory

FAQ

What is CVE-2026-28778?

CVE-2026-28778 is a vulnerability with a CVSS score of 9.8 (CRITICAL). International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite Receiver contains undocumented, hardcoded/insecure credentials for the `xd` user account. A remote unauthenticated attacker c...

How severe is CVE-2026-28778?

CVE-2026-28778 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-28778?

Check the references section above for vendor advisories and patch information. Affected products include: Datacast Sfx2100 Firmware, Datacast Sfx2100.