CVE-2026-28777Public exploitNetwork attack vector

Unauthenticated SSH access via hard-coded user password

Published Mar 4, 2026 · Updated Mar 4, 2026

Hard-coded credentials in IDC SFX2100 Satellite Receiver SFX2100 allow remote attackers to gain unauthorized SSH access. The appliance ships an undocumented user account with the fixed password 12345, so its SSH service accepts a credential shared across devices. Network reachability to SSH is the only reported gate; successful login starts a restricted shell that permits creation of a fully interactive pseudo-terminal.

CVSS severity9.2
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in IDC SFX2100 Satellite Receiver SFX2100 allow remote attackers to gain unauthorized SSH access. The appliance ships an undocumented user account with the fixed password 12345, so its SSH service accepts a credential shared across devices. Network reachability to SSH is the only reported gate; successful login starts a restricted shell that permits creation of a fully interactive pseudo-terminal.

The record

CVE
CVE-2026-28777
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
International Datacasting Corporation
Product
SFX2100 SuperFlex Satellite Receiver
Classifications
CWE-798, T1078.001, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=SFX2100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

International Datacasting Corporation · SFX2100 SuperFlex Satellite Receiverversion=SFX2100

Published CVSS scores

9.2GridwareCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1078.001Valid Accounts: Default Accounts
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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