How severe is CVE-2026-28777?

CVE-2026-28777 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28777?

CVE-2026-28777 affects Datacast Sfx2100 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28777?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-28777 have an EU (EUVD) identifier?

Yes. CVE-2026-28777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9372.

When was CVE-2026-28777 published?

CVE-2026-28777 was published on 2026-03-04 and last updated on 2026-06-17.

CVE-2026-28777

CVE-2026-28777 is a critical-severity vulnerability in Datacast Sfx2100 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.2
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9372
Weakness: CWE-798
Affected product: Datacast Sfx2100 Firmware
Published: 2026-03-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-28777?: 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.
How severe is CVE-2026-28777?: CVE-2026-28777 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28777?: CVE-2026-28777 affects Datacast Sfx2100 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-28777 have an EU (EUVD) identifier?: Yes. CVE-2026-28777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9372.
When was CVE-2026-28777 published?: CVE-2026-28777 was published on 2026-03-04 and last updated on 2026-06-17.

References

https://www.abdulmhsblog.com/posts/sfx2100-vulns/

Affected products (1)

cpe:2.3:o:datacast:sfx2100_firmware:-:*:*:*:*:*:*:*

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