What is the CVSS score of CVE-2026-29126?

CVE-2026-29126 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-29126?

Yes, a public proof-of-concept exploit is available for CVE-2026-29126. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-29126?

Within 24 hours: Inventory all Sfx2100 devices in production and development environments; isolate or restrict network access to affected systems if operationally feasible. Within 7 days: Implement compensating controls including network segmentation, access logging, and WAF rules to block exploitation attempts; contact vendor for patch timeline. Within 30 days: Apply vendor patch immediately upon release; conduct forensic review of logs for signs of prior exploitation.

Sfx2100 Firmware CVE-2026-29126

HIGH

Incorrect Permission Assignment for Critical Resource (CWE-732)

2026-03-05 b7efe717-a805-47cf-8e9a-921fca0ce0ce

Privilege Escalation Sfx2100 Firmware Datacast

7.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Local attacker gains system access
Delivery

Modify world-writable /etc/udhcpc/default.script
Exploit

Inject malicious commands
Execution

DHCP event triggers script execution
Impact

Arbitrary code executes as root

Vulnerability Assessment

Weakness	CWE CWE-732 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V13 - Configuration Permission assignment review
Exploitation Conditions	Local unprivileged user account access required on IDC SFX2100 Satellite Receiver. The /etc/udhcpc/default.script file must have world-writable permissions (chmod 666 or similar). DHCP client (udhcpc) must be enabled and configured to process DHCP lease events.
Impact	CVSS 7.8 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via local access. Public exploit/POC available.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Sfx2100 Firmware versions up to - is affected by incorrect permission assignment for critical resource (CVSS 7.8).

RemediationAI

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Affects your stack

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Technical ContextAI · show details

This vulnerability (CWE-732: Incorrect Permission Assignment for Critical Resource) affects Sfx2100 Firmware. Incorrect permission assignment (world-writable file) in /etc/udhcpc/default.script in International Data Casting (IDC) SFX2100 Satellite Receiver allows a local unprivileged attacker to potentially execute arbitrary commands with root privileges (local privilege escalation and persistence) via modification of a root-owned, world-writable BusyBox udhcpc DHCP event script, which is executed when a DHCP lease is obtained, renewed, or lost.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Mar 11, 2026 - 18:34 vuln.today

Public exploit code

CVE Published

Mar 05, 2026 - 02:16 nvd

HIGH 7.8

DescriptionCVE.org

Incorrect permission assignment (world-writable file) in /etc/udhcpc/default.script in International Data Casting (IDC) SFX2100 Satellite Receiver allows a local unprivileged attacker to potentially execute arbitrary commands with root privileges (local privilege escalation and persistence) via modification of a root-owned, world-writable BusyBox udhcpc DHCP event script, which is executed when a DHCP lease is obtained, renewed, or lost.

Executive ViewAI

Why It Matters

A high-severity vulnerability in Sfx2100 firmware allows unauthorized access to critical resources due to improper permission controls, affecting all unpatched devices up to the latest version. With a public exploit available and no vendor patch currently released, affected systems face immediate risk of unauthorized access and potential data compromise or operational disruption.

Business Impact: High

Compensating Controls

Network segmentation to restrict access to Sfx2100 devices; Web Application Firewall (WAF) rules to detect and block exploitation attempts; enforce strict authentication and authorization policies at the network perimeter; disable non-critical features on affected devices if operationally safe; implement enhanced logging and monitoring for suspicious access patterns; restrict administrative access to trusted networks only.

Threat Intelligence Overview

EPSS Score

0.0%

Top 98% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.