CVE-2026-66301

Analyzed Analyzed - Analysis Complete

Information Disclosure in Microsoft Dynamics 365

Publication date: 2026-08-11

Last updated on: 2026-08-17

Assigner: Microsoft Corporation

Description

Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-11

Last Modified

2026-08-17

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-66301

EUVD

EUVD-2026-56566

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	dynamics_365	From 9.1 (inc) to 9.1.47.06 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability involves the exposure of sensitive information to unauthorized actors in Microsoft Dynamics 365 (on-premises). An authorized attacker can disclose information over a network due to this flaw.

Impact Analysis

An attacker could exploit this to access sensitive data, potentially leading to data breaches, loss of confidential information, or further network compromise depending on the exposed data.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, or other regulations due to unauthorized data exposure. Organizations may face legal penalties, fines, or reputational damage if sensitive data is compromised.

Mitigation Strategies

Apply the latest security updates from Microsoft for Microsoft Dynamics 365 (on-premises) to address the information disclosure vulnerability.

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