CVE-2026-40417: Microsoft Dynamics 365 Business Central

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Dynamics 365 Business Central: version 2024 only; version 2025 only; version 2026 only

Published 2026-05-12. Last modified 2026-08-10.