{
"document": {
"acknowledgments": [
{
"names": [
"sho odagiri with GMO Cybersecurity by Ierae inc"
]
},
{
"names": [
"Brahim Chebli with Deloitte France’s Offensive Security Center"
]
},
{
"names": [
"Brahim Chebli with Deloitte France’s Offensive Security Center"
]
}
],
"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-2026-58643 Windows Admin Center Spoofing Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58643"
},
{
"category": "self",
"summary": "CVE-2026-58643 Windows Admin Center Spoofing Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-58643.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": "Windows Admin Center Spoofing Vulnerability",
"tracking": {
"current_release_date": "2026-07-16T07:00:00.000Z",
"generator": {
"date": "2026-07-17T21:28:06.419Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2026-58643",
"initial_release_date": "2026-07-16T07:00:00.000Z",
"revision_history": [
{
"date": "2026-07-16T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "<2511",
"product": {
"name": "Windows Admin Center <2511",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "2511",
"product": {
"name": "Windows Admin Center 2511",
"product_id": "11629"
}
}
],
"category": "product_name",
"name": "Windows Admin Center"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-58643",
"cwe": {
"id": "CWE-79",
"name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
},
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "An attacker would have to convince a user to visit a malicious website, typically via an enticement in email or instant message, or by getting them to open an email attachment.\nThe attack vector is address bar spoofing. A malicious website could spoof the contents of a URL bar via a specially crafted HTML page's long URL and then use it for a phishing attack.",
"title": "How could an attacker exploit the vulnerability?"
},
{
"category": "faq",
"text": "This vulnerability requires that a user with an affected version of Windows access a malicious server. An attacker would have to host a specially crafted server share or website. An attacker would have no way to force users to visit this specially crafted server share or website, but would have to convince them to visit the server share or website, typically by way of an enticement in an email or chat message.",
"title": "According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?"
}
],
"product_status": {
"fixed": [
"11629"
],
"known_affected": [
"1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2026-58643 Windows Admin Center Spoofing Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58643"
},
{
"category": "self",
"summary": "CVE-2026-58643 Windows Admin Center Spoofing Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-58643.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-16T07:00:00.000Z",
"details": "2511:Security Update:https://techcommunity.microsoft.com/blog/Windows-Admin-Center-Blog/windows-admin-center-version-2511-is-now-generally-available/4477048",
"product_ids": [
"1"
],
"url": "https://techcommunity.microsoft.com/blog/Windows-Admin-Center-Blog/windows-admin-center-version-2511-is-now-generally-available/4477048"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"environmentalScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "CHANGED",
"temporalScore": 5.3,
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1"
]
}
],
"threats": [
{
"category": "impact",
"details": "Spoofing"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No"
}
],
"title": "Windows Admin Center Spoofing Vulnerability"
}
]
}