What is the CVSS score of CVE-2026-26366?

CVE-2026-26366 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: 0.0%.

Is there a public PoC exploit available for CVE-2026-26366?

Yes, a public proof-of-concept exploit is available for CVE-2026-26366. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-26366?

Within 24 hours: Identify and inventory all eNet SMART HOME servers (versions 2.2.1 and 2.3.1) in your environment; immediately isolate affected systems from production networks or restrict network access to trusted administrative sources only. Within 7 days: Change all default credentials (user:user, admin:admin) to strong, unique passwords; implement network access controls limiting connections to authorized personnel only; enable logging and monitoring for authentication attempts. Within 30 days: Evaluate upgrade path to patched versions once available; implement network segmentation for SMART HOME infrastructure; deploy intrusion detection signatures for exploitation attempts; conduct security audit of affected systems for unauthorized access.

Enet Smart Home CVE-2026-26366

CRITICAL

Use of Default Credentials (CWE-1392)

2026-02-15 disclosure@vulncheck.com

Information Disclosure Enet Smart Home Jung Group

9.8

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Connect to eNet SMART HOME server network interface
Exploit

Supply default credentials (admin:admin)
Execution

Authenticate as administrator
Impact

Access sensitive smart home configuration and control functions

Vulnerability Assessment

Weakness	CWE CWE-1392 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Default credential prevention
Exploitation Conditions	eNet SMART HOME server versions 2.2.1 or 2.3.1 with default credentials (user:user, admin:admin) active after installation without mandatory password change enforcement. Remote network access to server required.
Impact	CVSS 9.8 with PoC. Smart home systems control lighting, HVAC, blinds, and potentially door locks. Default credentials provide complete home automation control.
Exploit ScenarioDerived	An attacker accesses the eNet SMART HOME interface with default admin:admin credentials, gaining control of all connected smart home devices including lighting, blinds, and climate control.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

eNet SMART HOME server ships with default credentials (user:user, admin:admin) (CVSS 9.8) enabling immediate administrative access to the smart home system.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 9.8

Default credentials in eNet SMART HOME server enable immediate admin access.

RemediationAI

Change default credentials immediately. Restrict smart home management to trusted networks.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

eNet SMART HOME server 2.2.1 and 2.3.1 ships with CWE-1392 default credentials (user:user, admin:admin) that most users never change.

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Exploit and PoC references, threat intelligence from 22 sources

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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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

PoC Detected

Feb 26, 2026 - 22:44 vuln.today

Public exploit code

CVE Published

Feb 15, 2026 - 16:15 nvd

CRITICAL 9.8

DescriptionCVE.org

eNet SMART HOME server 2.2.1 and 2.3.1 ships with default credentials (user:user, admin:admin) that remain active after installation and commissioning without enforcing a mandatory password change. Unauthenticated attackers can use these default credentials to gain administrative access to sensitive smart home configuration and control functions.

Executive ViewAI

Why It Matters

eNet SMART HOME servers versions 2.2.1 and 2.3.1 contain hardcoded default credentials that persist after deployment, creating an unauthenticated remote access vulnerability exploitable by any attacker with network connectivity. This critical vulnerability affects any organization operating these systems and poses immediate risk of unauthorized system takeover, data theft, and operational disruption without urgent remediation.

Business Impact: Severe

Compensating Controls

Network segmentation: isolate SMART HOME servers on dedicated VLAN with restricted access; Credential rotation: immediately force password changes for all default accounts; Access controls: implement firewall rules restricting administrative access to whitelisted IP addresses only; Monitoring: deploy enhanced logging and alerting for failed and successful authentication attempts; Disable remote access: restrict or disable remote management protocols if not operationally required; Web Application Firewall: if applicable, configure WAF rules to block exploitation patterns; Vulnerability scanning: conduct regular scans to detect unauthorized credential usage; Await vendor patch and establish expedited patching process once available.

Threat Intelligence Overview

EPSS Score

0.0%

Top 86% 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 CRITICAL

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

CRITICAL severity + public POC available

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

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

Very High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +49

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.