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Microsoft Security Response CenterCVE-2026-65815

Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability

Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to execute code over a network.

Read the vendor bulletin Get alerts for Microsoft Dynamics 365 (on-premises)
8.8CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft Dynamics 365 (on-premises) version 9.1

Versions the vendor lists as fixed

  • 9.1.0047.0006
Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site
Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • The vendor changed its remediation guidance.
Timeline

When this advisory changed

  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.

Vulnerabilities

CVEs named in this advisory

CVE-2026-65815View CVSS, KEV, EPSS, and threat context
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