CVE-2026-100214: Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2026-Oct

Released

2026-10-13

Description

Deserialization of untrusted data in Dynamics Business Central allows an authorized attacker to execute code over a network.

FAQ

How could an attacker exploit this vulnerability? An authenticated attacker with low-level access to an affected server could send a specially crafted request to execute code on the server. User interaction is not required.

Affected Products (2)

Microsoft Dynamics

• Microsoft Dynamics NAV 2017 on Windows Server 2012
• Microsoft Dynamics NAV 2018 on Windows Server 2012

Security Updates (2)

• Release Notes
• Release Notes

Acknowledgments

<a href="https://linkedin.com/in/ielhadi">Ilyass El Hadi</a> with <a href="https://armadin.com/">Armadin</a>, <a href="https://www.linkedin.com/in/john-nzyuko-412b563b1/">John Nzyuko</a>, <a href="https://linkedin.com/in/ielhadi">Ilyass El Hadi</a> with <a href="https://armadin.com/">Armadin</a>, <a href="https://www.linkedin.com/in/wangming13/">Pham Quang Minh</a>

Revision History

• 2026-10-13: Information published.