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Vulnerability record · CVE-2026-28778 · published 4 March 2026

CVE-2026-28778: Datacast sfx2100 firmware hard-coded credentials vulnerability

Datacast · Sfx2100 Firmware

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.

7.9 CVSS 4.0 High EPSS 0.80% · top 45.2% CWE-798 · Hard-coded credentials
7.9CVSS 4.0 base score
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-28775Datacast sfx2100 firmware insecure default initialization vulnerabilityAn unauthenticated Remote Code Execution (RCE) vulnerability exists in the SNMP service of International Datacasting Corporation (IDC) SFX Series Sup…EPSS 1.1%9.3CVE-2026-28773Datacast sfx2100 firmware os command injection vulnerabilityThe web-based Ping diagnostic utility (/IDC_Ping/main.cgi) in International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite  Receiver We…EPSS 2.5%9.3CVE-2026-28774Datacast sfx2100 firmware os command injection vulnerabilityAn OS Command Injection vulnerability exists in the web-based Traceroute diagnostic utility of International Datacasting Corporation (IDC) SFX Series…EPSS 2.9%9.2CVE-2026-29127Datacast sfx2100 firmware improper privilege management vulnerabilityThe IDC SFX2100 Satellite Receiver sets overly permissive file system permissions on the monitor user's home directory. The directory is configured w…EPSS 0.15%9.2CVE-2026-28777Datacast sfx2100 firmware hard-coded credentials vulnerabilityInternational Datacasting Corporation (IDC) SFX2100 Satellite Receiver, trivial password for the `user` (usr) account. A remote unauthenticated attac…EPSS 0.63%9.2CVE-2026-29120Datacast sfx2100 firmware hard-coded credentials vulnerabilityThe /root/anaconda-ks.cfg installation configuration file in International Datacasting Corporation (IDC) SFX Series(SFX2100) SuperFlex Satellite Rece…EPSS 0.16%8.8CVE-2026-29119Datacast sfx2100 firmware hard-coded credentials vulnerabilityInternational Datacasting Corporation (IDC) SFX Series SuperFlex(SFX2100) SatelliteReceiver contains hardcoded and insecure credentials for the `admi…EPSS 0.63%8.6CVE-2026-29128Datacast sfx2100 firmware insufficiently protected credentials vulnerabilityIDC SFX2100 Satellite Receiver firmware ships with multiple daemon configuration files for routing components (e.g., zebra, bgpd, ospfd, and ripd) th…EPSS 0.29%

Source: NIST National Vulnerability Database (record CVE-2026-28778), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.