What is the CVSS score of CVE-2026-28775?

CVE-2026-28775 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.6%.

Which versions of SNMP are affected by CVE-2026-28775?

Organizations operating IDC SFX Series SuperFlex SatelliteReceiver systems face an immediate critical risk: unauthenticated attackers can remotely execute arbitrary code by exploiting a default SNMP…

Is there a public PoC exploit available for CVE-2026-28775?

Yes, a public proof-of-concept exploit is available for CVE-2026-28775. Prioritise patching immediately. EPSS: 0.6%.

How to fix or mitigate CVE-2026-28775?

Within 24 hours: Identify and inventory all IDC SFX Series SuperFlex SatelliteReceiver systems in your environment; immediately disable SNMP service or restrict it to localhost/trusted IPs only. Within 7 days: implement network segmentation to isolate satellite receiver devices on a restricted VLAN with egress filtering; change or disable the default 'private' SNMP community string; enable comprehensive logging and alerting on SNMP traffic and receiver access. Within 30 days: evaluate vendor roadmap for patch availability and timeline; consider procuring replacement hardware if patch will not be delivered; conduct forensic analysis of access logs to detect prior exploitation.

SNMP CVE-2026-28775

CRITICAL

Initialization of a Resource with an Insecure Default (CWE-1188)

2026-03-04 b7efe717-a805-47cf-8e9a-921fca0ce0ce

SNMP RCE Sfx2100 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 09, 2026 - 18:24 vuln.today

Public exploit code

CVE Published

Mar 04, 2026 - 08:16 nvd

CRITICAL 9.8

DescriptionCVE.org

An unauthenticated Remote Code Execution (RCE) vulnerability exists in the SNMP service of International Datacasting Corporation (IDC) SFX Series SuperFlex SatelliteReceiver. The deployment insecurely provisions the private SNMP community string with read/write access by default. Because the SNMP agent runs as root, an unauthenticated remote attacker can utilize NET-SNMP-EXTEND-MIB directives, abusing the fact that the system runs a vulnerable version of net-snmp pre 5.8, to execute arbitrary operating system commands with root privileges.

AnalysisAI

Hardcoded/insecure credentials in IDC SFX Series SuperFlex Satellite Receiver. Multiple accounts with known credentials enable complete device takeover.