CVE-2026-28777 Hardcoded and Insecure Credentials for "User" Local Account with SSH Access On IDC SFX2100 Satellite Receiver

What is CVE-2026-28777?

CVE-2026-28777 is a critical vulnerability in International Datacasting Corporation (IDC) SFX2100 Satellite Receiver, published on 4 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

International Datacasting Corporation (IDC)

SFX2100 Satellite Receiver, trivial password for the `user` (usr) account. A remote unauthenticated attacker can exploit this to gain unauthorized SSH access to the system, while intially dropped into a restricted shell, an attacker can trivially spawn a complete pty to gain an appropriately interactive shell.

Weakness: CWE-798

Which versions are affected by CVE-2026-28777?

It affects 1 product.

Products include Datacast Sfx2100 Firmware.

How do I fix CVE-2026-28777?

No fix has been published for CVE-2026-28777 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-28777 being exploited?

There is no known exploitation of CVE-2026-28777 in the wild and no public exploit code.

Other vulnerabilities in International Datacasting Corporation (IDC) SFX2100 Satellite Receiver

• CVE-2026-28775 Unauthenticated RCE via SNMP Default Writable Community String Critical 10.0
• CVE-2026-28773 Authenticated OS Command Injection via Ping Utility Leading to RCE as Root Critical 9.3
• CVE-2026-28774 Authenticated OS Command Injection via Traceroute Utility leads to Root RCE Critical 9.3
• CVE-2026-29127 Incorrect Permission Assignment(777) on `monitor` Users Home Directory Containing SUID Root Binaries in IDC SFX2100 Critical 9.2
• CVE-2026-29120 Insecure, Hardcoded Root Password Stored in Anaconda Configuration File On IDC SFX2100 Satellite Receiver Critical 9.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pc9c-jvjv-62wx.