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Microsoft Security Response CenterCVE-2026-42833

Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

HighVendor CVSS 9.1 / 10 1 CVE Published May 12, 2026 at 7:00 AM UTC

Summary

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

Products covered

  • Microsoft Dynamics 365 (on-premises) version 9.1

Remediation

Install KB5078943.

Vendor-listed fixes

  • 9.1.45.11

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.