What is CVE-2026-40371?

CVE-2026-40371 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Dynamics 365 (on-premises) Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-40371 cover?

CVE-2026-40371 covers the following CVE IDs: CVE-2026-40371. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-40371?

CVE-2026-40371 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-40371?

CVE-2026-40371 affects 1 product, including: Microsoft Dynamics 365 (on-premises) version 9.1.

CVE-2026-40371HighCVSS 8.8

Microsoft Dynamics 365 (on-premises) Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 10, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-40371 →

📋 Description

Improper handling of insufficient permissions or privileges in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to elevate privileges over a network.

🎯 Affected products1

Microsoft Dynamics 365 (on-premises) version 9.1

✅ Remediation

KBRelease Notes (Security Update) — fixed build 9.1.0045.0011

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40371
patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108666
referencehttps://support.microsoft.com/en-us/topic/service-update-1-45-for-microsoft-dynamics-crm-on-premises-9-1-63e24664-3193-4182-a110-934ee929ce93