What is the CVSS score of CVE-2026-23664?

CVE-2026-23664 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-23664?

Within 24 hours: Identify all instances of Azure IoT Explorer in production and development environments and assess which handle sensitive IoT device data. Within 7 days: Deploy the available vendor patch across all affected systems, prioritizing production environments first. Within 30 days: Complete patching of all instances including development, staging, and backup systems, and validate patch deployment through vulnerability scanning.

Azure CVE-2026-23664

HIGH

Improper Restriction of Communication Channel to Intended Endpoints (CWE-923)

2026-03-10 secure@microsoft.com

Microsoft IoT Azure Azure Iot Explorer

7.5

CVSS 3.1 · NVD

View

Attack ChainAIDerived

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

Access

Connect to Azure IoT Explorer network interface
Exploit

Intercept unencrypted communication channel
Impact

Extract sensitive device credentials and telemetry data

Vulnerability Assessment

Weakness	CWE CWE-923 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V12 - Secure Communication Improper restriction of communication channel
Exploitation Conditions	No special conditions — remote unauthenticated exploitation against Azure IoT Explorer instances with improper endpoint communication restrictions on default network configurations.
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker without authentication could exploit this vulnerability to compromise the affected system.

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

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Azure IoT Explorer fails to properly restrict communication to intended endpoints, enabling unauthenticated attackers to intercept and disclose sensitive information over the network. The vulnerability requires no user interaction and can be exploited remotely with a CVSS score of 7.5. A patch is available for affected Azure IoT products.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 7.5

Improper restriction of communication channel to intended endpoints in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network. [CVSS 7.5 HIGH]

RemediationAI

A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.

Affected Packages

microsoft azure_iot_explorer_0_15_13 fix: Azure IoT Explorer 0.15.13

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in microsoft

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

Technical ContextAI · show details

Affects Azure Iot Explorer. Improper restriction of communication channel to intended endpoints in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

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

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

None

Availability

None

Lifecycle Timeline

Patch released

Mar 12, 2026 - 19:31 nvd

Patch available

CVE Published

Mar 10, 2026 - 18:18 nvd

HIGH 7.5

DescriptionCVE.org

Improper restriction of communication channel to intended endpoints in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.

Executive ViewAI

Why It Matters

CVE-2026-23664 affects Azure IoT Explorer and allows attackers to intercept sensitive data transmitted between the application and IoT endpoints. Organizations using Azure IoT Explorer for device management face potential exposure of configuration data, credentials, and operational intelligence if systems are not patched promptly.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.1%

Top 79% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

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 No

EPSS 0.1%

Patch available Yes

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.