CVE-2026-42833

Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

CVE-2026-42833 is fixed in Microsoft Dynamics 365 (on-premises) version 9.1 on 1 platform by KB5078943 (version ), released May 12, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

9.1

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0075

55th percentile

<p>Improper control of generation of code ('code injection') in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Microsoft Dynamics 365 (on-premises) version 9.1		KB5078943	May 12, 2026

Details

Published
May 12, 2026
Weakness
Execution with Unnecessary Privileges
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42833

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/cve/CVE-2026-42833">CVE-2026-42833 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Is this on your machines?

Patchblox finds every install below the fixed version on Windows, macOS and Linux, and updates them through your release rings.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.