Security Updates for Microsoft Dynamics 365 Business Central (August 2026)

medium Nessus Plugin ID 335416

Synopsis

The Microsoft Dynamics 365 Business Central install is missing a security update.

Description

The Microsoft Dynamics 365 Business Central install is missing a security update. It is, therefore, affected by an information disclosure vulnerability due to missing authorization. An authenticated, remote attacker can exploit this, to disclose potentially sensitive information.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update Microsoft Dynamics 365 Business Central to Update 26.14 for 2025 Release Wave 1, Update 27.8 for 2025 Release Wave 2, Update 28.2 for 2026 Release Wave 1, or later.

See Also

https://support.microsoft.com/help/5100263

https://support.microsoft.com/help/5100265

https://support.microsoft.com/help/5100266

Plugin Details

Severity: Medium

ID: 335416

File Name: smb_nt_ms26_aug_microsoft_dynamics_365_bc.nasl

Version: 1.1

Type: Local

Agent: windows

Published: 8/14/2026

Updated: 8/14/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2026-40375

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: cpe:/a:microsoft:dynamics_365

Required KB Items: installed_sw/Microsoft Dynamics 365 Business Central Server

Patch Publication Date: 8/11/2026

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2026-40375

CWE: 862

IAVA: 2026-A-0841

MSFT: MS26-5100263, MS26-5100265, MS26-5100266

MSKB: 5100263, 5100265, 5100266