{ "document": { "acknowledgments": [ { "names": [ "Fabian Schmidt" ] } ], "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-2021-34524 Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34524" }, { "category": "self", "summary": "CVE-2021-34524 Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-34524.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 On-Premises Remote Code Execution Vulnerability", "tracking": { "current_release_date": "2021-08-11T07:00:00.000Z", "generator": { "date": "2026-08-10T15:09:50.403Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2021-34524", "initial_release_date": "2021-08-10T07:00:00.000Z", "revision_history": [ { "date": "2021-08-10T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." }, { "date": "2021-08-10T07:00:00.000Z", "legacy_version": "1.1", "number": "2", "summary": "The following revisions have been made: 1) In the Security Updates table, updated the Download and Release Note links for Dynamics 365 (on-premises) version 9.0. This is an informational change only. 2) Added an FAQ regarding the availability of the security update for Microsoft Dynamics 365 (on-premises) version 9.1." }, { "date": "2021-08-11T07:00:00.000Z", "legacy_version": "2", "number": "3", "summary": "Microsoft is announcing the availability of the security updates for Microsoft Dynamics 365 (on-premises) version 9.1. Customers running affected Dynamics software should install the update for their product to be protected from this vulnerability. Customers running other versions of Microsoft Dynamics 365 (on-premises) do not need to take any action. See the [KB4618809](https://support.microsoft.com/en-us/topic/service-update-1-3-for-microsoft-dynamics-crm-on-premises-9-1-4f9cb846-6c00-4fc1-9c13-bc0bbe733009) for more information and download links." } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "<9.1.3.11", "product": { "name": "Microsoft Dynamics 365 (on-premises) version 9.1 <9.1.3.11", "product_id": "1" } }, { "category": "product_version", "name": "9.1.3.11", "product": { "name": "Microsoft Dynamics 365 (on-premises) version 9.1 9.1.3.11", "product_id": "11921" } } ], "category": "product_name", "name": "Microsoft Dynamics 365 (on-premises) version 9.1" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.31.7", "product": { "name": "Microsoft Dynamics 365 (on-premises) version 9.0 <9.0.31.7", "product_id": "2" } }, { "category": "product_version", "name": "9.0.31.7", "product": { "name": "Microsoft Dynamics 365 (on-premises) version 9.0 9.0.31.7", "product_id": "11664" } } ], "category": "product_name", "name": "Microsoft Dynamics 365 (on-premises) version 9.0" } ] }, "vulnerabilities": [ { "cve": "CVE-2021-34524", "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "The security update for Microsoft Dynamics 365 (on-premises) version 9.1 is not immediately available. The update will be released as soon as possible, and when it is available, customers will be notified via a revision to this CVE information.", "title": "Is the update for Microsoft Dynamics 365 (on-premises) version 9.1 currently available?" } ], "product_status": { "fixed": [ "11664", "11921" ], "known_affected": [ "1", "2" ] }, "references": [ { "category": "self", "summary": "CVE-2021-34524 Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34524" }, { "category": "self", "summary": "CVE-2021-34524 Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-34524.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2021-08-10T07:00:00.000Z", "details": "9.1.3.11:Security Update:https://support.microsoft.com/en-us/topic/service-update-1-3-for-microsoft-dynamics-crm-on-premises-9-1-4f9cb846-6c00-4fc1-9c13-bc0bbe733009", "product_ids": [ "1" ], "url": "https://support.microsoft.com/en-us/topic/service-update-1-3-for-microsoft-dynamics-crm-on-premises-9-1-4f9cb846-6c00-4fc1-9c13-bc0bbe733009" }, { "category": "vendor_fix", "date": "2021-08-10T07:00:00.000Z", "details": "9.0.31.7:Security Update:https://support.microsoft.com/en-us/topic/service-update-0-31-for-microsoft-dynamics-crm-on-premises-9-0-5bb7ff5b-8fbd-465c-8590-6e4522289913", "product_ids": [ "2" ], "url": "https://support.microsoft.com/en-us/topic/service-update-0-31-for-microsoft-dynamics-crm-on-premises-9-0-5bb7ff5b-8fbd-465c-8590-6e4522289913" } ], "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "environmentalScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 7.1, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1", "2" ] } ], "threats": [ { "category": "impact", "details": "Remote Code Execution" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely" } ], "title": "Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability" } ] }