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Microsoft Security Response CenterCVE-2026-77908

Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

HighVendor CVSS 8.8 / 10 1 CVE Published Sep 8, 2026 at 7:00 AM UTC

Summary

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

Products covered

  • Microsoft Dynamics 365 Customer Engagement V9.1

Remediation

Install KB5123731.

Vendor-listed fixes

  • 9.1.0048.0004

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.