CVE-2026-55944 Details
Description
Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.
A remote code execution vulnerability has been identified in Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On-Premises) versions through 2018. This vulnerability arises from the deserialization of untrusted data, allowing an unauthorized attacker to execute arbitrary code on the affected system over the network. Exploitation does not require authentication or user interaction.
Users can download the security update for Microsoft Dynamics NAV 2018 from the Microsoft Download Center. For other versions, consult the Microsoft Security Update Guide for guidance.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55944 | [email protected] | Vendor AdvisoryPatch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft dynamics nav | 2018 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | Initial Analysis | [email protected] |
| Jul 14, 2026 | CVE Modified | CISA-ADP |
| Jul 14, 2026 | New CVE Received | [email protected] |