SB2026071721 - Remote code execution in Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises)

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Main Vulnerability Database SB2026071721

SB2026071721 - Remote code execution in Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises)

Published: July 17, 2026

Security Bulletin ID SB2026071721
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Deserialization of Untrusted Data (CVE-ID: CVE-2026-55944)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data in Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises). A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References