CVE-2026-40417

Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability

CVE-2026-40417 is fixed in 4 products on 1 platform, first by KB5086068, released May 12, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0027

19th percentile

<p>Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft Dynamics 365 Business Central 2024 Release Wave 2	KB5086068	May 12, 2026
Microsoft Dynamics 365 Business Central 2026 Release Wave 1	KB5093780	May 12, 2026
Microsoft Dynamics 365 Business Central Release Wave 1 2025	KB5086069	May 12, 2026
Microsoft Dynamics 365 Business Central Release Wave 2 2025	KB5086070	May 12, 2026

Details

Published
May 12, 2026
Weakness
Weak Authentication
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40417

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