CVE-2026-42833 Details
Description
Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.
A remote code execution vulnerability has been identified in Microsoft Dynamics 365 (on-premises) version 9.1. This vulnerability allows an authorized attacker with System Administrator privileges to execute code over the network. The issue arises from the application executing code with unnecessary privileges, which could be exploited by manipulating data related to background operations. When this data is processed, it may be deserialized without proper validation, enabling the execution of unauthorized commands on the CRM server.
Users can download the security update for Microsoft Dynamics 365 (on-premises) version 9.1 from the Microsoft Support website. Knowledge Base Article 5078943 provides additional information about this update.
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 May 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42833 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
| CWE-250 | Execution with Unnecessary Privileges | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft dynamics 365 | >= 9.1, < 9.1.45.11 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | CVE Modified | [email protected] |
| May 14, 2026 | Initial Analysis | [email protected] |
| May 12, 2026 | New CVE Received | [email protected] |