What is CVE-2026-55944?

CVE-2026-55944 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-55944 cover?

CVE-2026-55944 covers the following CVE IDs: CVE-2026-55944. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-55944?

CVE-2026-55944 has a CVSS v3 base score of 9.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-55944?

CVE-2026-55944 affects 1 product, including: Microsoft Dynamics NAV 2018.

CVE-2026-55944CriticalCVSS 9.8

Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 17, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-55944 →

📋 Description

Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.

🎯 Affected products1

Microsoft Dynamics NAV 2018

✅ Remediation

KBRelease Notes (Security Update) — fixed build 11.0.50704.0

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55944
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108720
referencehttps://support.microsoft.com/en-US/servicing/dynamics/nav/update/2022/12/cumulative-update-60-for-microsoft-dynamics-nav-2018-build-49618