What is CVE-2026-40375?

CVE-2026-40375 is a medium-severity vulnerability in Microsoft Dynamics 365 Business Central 2024 Release Wave 2, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-08-11.

How severe is CVE-2026-40375?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Microsoft Dynamics 365 Business Central 2024 Release Wave 2

CVE-2026-40375

Missing authorization in Dynamics Business Central allows an authorized attacker to disclose information over a network.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Microsoft Dynamics 365 Business Central 2024 Release Wave 2
Microsoft Dynamics 365 Business Central 2026 Release Wave 1 — versions 28.0
Microsoft Dynamics 365 Business Central Release Wave 1 2025 — versions 26.0
Microsoft Dynamics 365 Business Central Release Wave 2 2025 — versions 27.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-40375?: CVE-2026-40375 is a medium-severity vulnerability in Microsoft Dynamics 365 Business Central 2024 Release Wave 2, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-08-11.
How severe is CVE-2026-40375?: Medium severity. CVSS v3 base score is 6.5 out of 10.