CVE-2026-28776Public exploitNetwork attack vector

Unauthenticated shell access via hardcoded SSH credentials

Published Mar 4, 2026 · Updated Mar 4, 2026

Hardcoded credentials in the monitor account on the IDC SFX2100 Satellite Receiver allow remote attackers to obtain SSH access. The appliance accepts the undocumented monitor:12345 credential over SSH and places the session in a restricted shell whose PATH can be changed or whose commands can be invoked by absolute paths. Network reachability to SSH is sufficient; escaping the restriction provides standard shell functionality under the monitor account.

CVSS severity7.8
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hardcoded credentials in the monitor account on the IDC SFX2100 Satellite Receiver allow remote attackers to obtain SSH access. The appliance accepts the undocumented monitor:12345 credential over SSH and places the session in a restricted shell whose PATH can be changed or whose commands can be invoked by absolute paths. Network reachability to SSH is sufficient; escaping the restriction provides standard shell functionality under the monitor account.

The record

CVE
CVE-2026-28776
Published
Mar 4, 2026
Updated
Mar 4, 2026
Vendor
International Datacasting Corporation
Product
SFX2100 SuperFlex Satellite Receiver
Classifications
CWE-798, T1078.001, T1021.004
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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8GridwareCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1078.001Default Accounts
T1021.004SSH

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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