# CVE-2026-100214: Microsoft Dynamics Business Central deserialization of untrusted data

Source: https://junglewise.ai/threats/cve-2026-100214-deserialization-of-untrusted-data-in-dynamics-business-central  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-100214 · Severity: high · CVSS 8.8 · Published 2026-10-13

Dynamics Business Central, Microsoft's enterprise resource planning system used by organizations to manage business operations, contains a flaw that allows an authorized user to execute arbitrary code on the server. An attacker with legitimate access to the system could exploit this vulnerability to gain control of the application and underlying data.

Technologies: [Microsoft Dynamics Business Central](https://junglewise.ai/threats/technologies/dynamics-business-central). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-100214 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100214 being exploited in the wild.

**How severe is CVE-2026-100214?** High severity, with a CVSS score of 8.8, published 13 October 2026.

**Which products and versions are affected?** Microsoft Dynamics Business Central.

**Is there a fix for CVE-2026-100214?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-100214 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-100214?** Check whether you run Microsoft Dynamics Business Central. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in the deserialization handling of untrusted data within Dynamics Business Central. An authorized attacker can craft malicious serialized objects that, when deserialized by the application, lead to remote code execution. The attack requires existing network access and authentication to the affected system.

## Affected products

- Microsoft Dynamics Business Central

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100214](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100214)

## Related threats

- [Microsoft Dynamics Business Central authentication bypass](https://junglewise.ai/threats/cve-2026-105728-improper-authentication-in-dynamics-business-central-allows-an)
- [Microsoft Dynamics Business Central path traversal privilege escalation](https://junglewise.ai/threats/cve-2026-105727-improper-limitation-of-a-pathname-to-a-restricted-directory-path)
- [Microsoft Dynamics Business Central path traversal privilege escalation](https://junglewise.ai/threats/cve-2026-102226-improper-limitation-of-a-pathname-to-a-restricted-directory-path)