CVE-2026-105728

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Improper Authentication in Dynamics Business Central

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Improper authentication in Dynamics Business Central allows an unauthorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-105728

EUVD

EUVD-2026-99030

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	Dynamics NAV 2018 1.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper authentication issue in Microsoft Dynamics Business Central. It allows an unauthorized attacker to access and disclose sensitive information over a network without proper authentication.

Impact Analysis

An attacker could exploit this to steal confidential data, such as customer or business records, leading to financial loss, reputational damage, or legal consequences.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR (data protection) and HIPAA (health information privacy) requirements, resulting in regulatory penalties and loss of trust.

Mitigation Strategies

Apply the latest security updates from Microsoft for Dynamics Business Central to address the improper authentication issue. Monitor Microsoft's update guide for patches and verify installation.

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