What’s Vulnerable › Vulnerabilities

CVE-2026-40375: Microsoft Dynamics Business Central Information Disclosure Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-11 · updated 2026-10-30
• Weakness: CWE-862

Description

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

Affected products

• Microsoft Dynamics 365 Business Central 2024: from 25.1.25900
• Microsoft Dynamics 365 Business Central 2025: from 26.0 before 26.0.50788; from 27.0 before 27.0.50789 — fixed in 26.0.50788, 27.0.50789
• Microsoft Dynamics 365 Business Central 2026: from 28.0 before 28.0.50938 — fixed in 28.0.50938
• Microsoft Dynamics NAV 2018: from 1.0 before 11.0.50736.0 — fixed in 11.0.50736.0
• Microsoft Dynamics NAV 2017: from 1.0 before 30713 — fixed in 30713

How to fix

Upgrade to a fixed version: Microsoft Dynamics 365 Business Central 2025 26.0.50788, 27.0.50789; Microsoft Dynamics 365 Business Central 2026 28.0.50938; Microsoft Dynamics NAV 2018 11.0.50736.0; Microsoft Dynamics NAV 2017 30713. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40375

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