What is the CVSS score of CVE-2026-23662?

CVE-2026-23662 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: 0.0%.

How to fix or mitigate CVE-2026-23662?

Within 24 hours: Identify all systems running Azure IoT Explorer and assess exposure scope. Within 7 days: Apply the available vendor patch to all affected instances and validate remediation. Within 30 days: Conduct audit of IoT device access logs to determine if unauthorized access occurred.

Azure CVE-2026-23662

HIGH

Missing Authentication for Critical Function (CWE-306)

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

Access Azure IoT Explorer network interface
Exploit

Send unauthenticated request to critical function
Execution

Retrieve sensitive IoT device information
Impact

Disclose confidential data

Vulnerability Assessment

Weakness	CWE CWE-306 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Authentication required for critical functions MITRE ATT&CK 1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Exploitation Conditions	No special conditions — remote unauthenticated exploitation against default Azure IoT Explorer installations with network-accessible critical functions lacking authentication controls.
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 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Azure IoT Explorer fails to enforce authentication on a critical function, enabling unauthenticated network attackers to remotely access and exfiltrate sensitive information. This high-severity vulnerability (CVSS 7.5) affects Azure IoT deployments and requires immediate patching to prevent unauthorized disclosure of IoT configuration and operational data. A patch is available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 7.5

Missing authentication for critical function 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

Classified as CWE-306 (Missing Authentication for Critical Function). Affects Azure Iot Explorer. Missing authentication for critical function 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 - 19:32 nvd

Patch available

CVE Published

Mar 10, 2026 - 18:18 nvd

HIGH 7.5

DescriptionCVE.org

Missing authentication for critical function in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.

Executive ViewAI

Why It Matters

A missing authentication vulnerability in Azure IoT Explorer (CVE-2026-23662) allows unauthenticated attackers to access sensitive IoT device information. Organizations using Azure IoT Explorer are at immediate risk of data disclosure affecting connected devices and operational technology environments.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.0%

Top 88% 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 0.0%

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.