What is CVE-2026-28778?

CVE-2026-28778 is a critical-severity vulnerability in Datacast Sfx2100, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-04.

How severe is CVE-2026-28778?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Datacast Sfx2100

CVE-2026-28778

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.

EPSS: 0.008 (54.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Datacast Sfx2100
Datacast Sfx2100_firmware
International Datacasting Corporation (Idc) Idc Sfx2100 Superflex Satellite Receiver — versions SFX2100

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

b7efe717-a805-47cf-8e9a-921fca0ce0ce (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-28778?: CVE-2026-28778 is a critical-severity vulnerability in Datacast Sfx2100, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-04.
How severe is CVE-2026-28778?: Critical severity. CVSS v3 base score is 9.8 out of 10.