{ "document": { "acknowledgments": [ { "names": [ "Nhien Pham (@nhienit) with Galaxy One" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Public", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en-US", "notes": [ { "category": "general", "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.", "title": "Disclaimer" }, { "category": "general", "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.", "title": "Customer Action" } ], "publisher": { "category": "vendor", "contact_details": "secure@microsoft.com", "name": "Microsoft Security Response Center", "namespace": "https://msrc.microsoft.com" }, "references": [ { "category": "self", "summary": "CVE-2026-40417 Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40417" }, { "category": "self", "summary": "CVE-2026-40417 Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40417.json" }, { "category": "external", "summary": "Microsoft Exploitability Index", "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1" }, { "category": "external", "summary": "Microsoft Support Lifecycle", "url": "https://support.microsoft.com/lifecycle" }, { "category": "external", "summary": "Common Vulnerability Scoring System", "url": "https://www.first.org/cvss" } ], "title": "Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability", "tracking": { "current_release_date": "2026-05-12T07:00:00.000Z", "generator": { "date": "2026-05-14T18:07:41.816Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2026-40417", "initial_release_date": "2026-05-12T07:00:00.000Z", "revision_history": [ { "date": "2026-05-12T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." } ], "status": "final", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "<28.1", "product": { "name": "Microsoft Dynamics 365 Business Central 2026 Release Wave 1 <28.1", "product_id": "1" } }, { "category": "product_version", "name": "28.1", "product": { "name": "Microsoft Dynamics 365 Business Central 2026 Release Wave 1 28.1", "product_id": "21327" } } ], "category": "product_name", "name": "Microsoft Dynamics 365 Business Central 2026 Release Wave 1" }, { "branches": [ { "category": "product_version_range", "name": "<26.12", "product": { "name": "Microsoft Dynamics 365 Business Central Release Wave 1 2025 <26.12", "product_id": "3" } }, { "category": "product_version", "name": "26.12", "product": { "name": "Microsoft Dynamics 365 Business Central Release Wave 1 2025 26.12", "product_id": "21325" } } ], "category": "product_name", "name": "Microsoft Dynamics 365 Business Central Release Wave 1 2025" }, { "branches": [ { "category": "product_version_range", "name": "<27.6", "product": { "name": "Microsoft Dynamics 365 Business Central Release Wave 2 2025 <27.6", "product_id": "2" } }, { "category": "product_version", "name": "27.6", "product": { "name": "Microsoft Dynamics 365 Business Central Release Wave 2 2025 27.6", "product_id": "21326" } } ], "category": "product_name", "name": "Microsoft Dynamics 365 Business Central Release Wave 2 2025" }, { "branches": [ { "category": "product_version_range", "name": "<25.18", "product": { "name": "Microsoft Dynamics 365 Business Central 2024 Release Wave 2 <25.18", "product_id": "4" } }, { "category": "product_version", "name": "25.18", "product": { "name": "Microsoft Dynamics 365 Business Central 2024 Release Wave 2 25.18", "product_id": "21324" } } ], "category": "product_name", "name": "Microsoft Dynamics 365 Business Central 2024 Release Wave 2" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-40417", "cwe": { "id": "CWE-1390", "name": "Weak Authentication" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.", "title": "What privileges could be gained by an attacker who successfully exploited this vulnerability?" } ], "product_status": { "fixed": [ "21324", "21325", "21326", "21327" ], "known_affected": [ "1", "2", "3", "4" ] }, "references": [ { "category": "self", "summary": "CVE-2026-40417 Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40417" }, { "category": "self", "summary": "CVE-2026-40417 Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40417.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "28.1:Security Update:http://support.microsoft.com/kb/5093780", "product_ids": [ "1" ], "url": "http://support.microsoft.com/kb/5093780" }, { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "26.12:Security Update:http://support.microsoft.com/kb/5086069", "product_ids": [ "3" ], "url": "http://support.microsoft.com/kb/5086069" }, { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "27.6:Security Update:http://support.microsoft.com/kb/5086070", "product_ids": [ "2" ], "url": "http://support.microsoft.com/kb/5086070" }, { "category": "vendor_fix", "date": "2026-05-12T07:00:00.000Z", "details": "25.18:Security Update:http://support.microsoft.com/kb/5086068", "product_ids": [ "4" ], "url": "http://support.microsoft.com/kb/5086068" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "environmentalsScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 6.8, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1", "2", "3", "4" ] } ], "threats": [ { "category": "impact", "details": "Elevation of Privilege" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely" } ], "title": "Microsoft Dynamics 365 Business Central Elevation of Privilege Vulnerability" } ] }