{
"document": {
"acknowledgments": [
{
"names": [
"rskvp93 with Viettel Cyber Security"
]
}
],
"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-2021-40440 Microsoft Dynamics Business Central Cross-site Scripting Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40440"
},
{
"category": "self",
"summary": "CVE-2021-40440 Microsoft Dynamics Business Central Cross-site Scripting Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-40440.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 Business Central Cross-site Scripting Vulnerability",
"tracking": {
"current_release_date": "2026-08-10T07:00:00.000Z",
"generator": {
"date": "2026-08-10T15:10:32.802Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2021-40440",
"initial_release_date": "2021-09-14T07:00:00.000Z",
"revision_history": [
{
"date": "2021-09-14T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2026-08-10T07:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Updated the build numbers. This is an informational update only."
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "<17.0.29460",
"product": {
"name": "Microsoft Dynamics 365 Business Central 2020 Release Wave 2 – Update 17.10 <17.0.29460",
"product_id": "2"
}
},
{
"category": "product_version",
"name": "17.0.29460",
"product": {
"name": "Microsoft Dynamics 365 Business Central 2020 Release Wave 2 – Update 17.10 17.0.29460",
"product_id": "11938"
}
}
],
"category": "product_name",
"name": "Microsoft Dynamics 365 Business Central 2020 Release Wave 2 – Update 17.10"
},
{
"branches": [
{
"category": "product_version_range",
"name": "<18.0.29486",
"product": {
"name": "Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.5 <18.0.29486",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "18.0.29486",
"product": {
"name": "Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.5 18.0.29486",
"product_id": "11939"
}
}
],
"category": "product_name",
"name": "Microsoft Dynamics 365 Business Central 2021 Release Wave 1 - Update 18.5"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-40440",
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"11938",
"11939"
],
"known_affected": [
"1",
"2"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2021-40440 Microsoft Dynamics Business Central Cross-site Scripting Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40440"
},
{
"category": "self",
"summary": "CVE-2021-40440 Microsoft Dynamics Business Central Cross-site Scripting Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-40440.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2021-09-14T07:00:00.000Z",
"details": "17.0.29460:Security Update:https://support.microsoft.com/en-us/help/5006075",
"product_ids": [
"2"
],
"url": "https://support.microsoft.com/en-us/help/5006075"
},
{
"category": "vendor_fix",
"date": "2021-09-14T07:00:00.000Z",
"details": "18.0.29486:Security Update:https://support.microsoft.com/en-us/help/5006076",
"product_ids": [
"1"
],
"url": "https://support.microsoft.com/en-us/help/5006076"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"environmentalScore": 0.0,
"exploitCodeMaturity": "PROOF_OF_CONCEPT",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "CHANGED",
"temporalScore": 4.9,
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1",
"2"
]
}
],
"threats": [
{
"category": "impact",
"details": "Spoofing"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely"
}
],
"title": "Microsoft Dynamics Business Central Cross-site Scripting Vulnerability"
}
]
}