Vulnerability in Microsoft Dynamics 365 Business Central
CVE-2026-40417
Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (20.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Microsoft Dynamics 365 Business Central — versions 2024, 2025, 2026
- Microsoft Dynamics 365 Business Central 2024 Release Wave 2 — versions 25.0
- 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)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40417 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-40417?
- CVE-2026-40417 is a high-severity vulnerability in Microsoft Dynamics 365 Business Central, classified under Weak Authentication. CVSS score: 7.8/10. Published 2026-05-12.
- How severe is CVE-2026-40417?
- High severity. CVSS v3 base score is 7.8 out of 10.