{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72989", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-08-10T18:38:17.057Z", "datePublished": "2026-09-08T17:17:48.287Z", "dateUpdated": "2026-09-16T21:57:55.313Z" }, "containers": { "cna": { "title": "Windows Failover Cluster Information Disclosure Vulnerability", "datePublic": "2026-09-08T14:00:00.000Z", "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*", "versionStartIncluding": "10.0.17763.0", "versionEndExcluding": "10.0.17763.9245" }, { "vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.17763.0", "versionEndExcluding": "10.0.17763.9245" }, { "vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.17763.0", "versionEndExcluding": "10.0.17763.9245" }, { "vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.20348.0", "versionEndExcluding": "10.0.20348.5622" }, { "vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.26100.0", "versionEndExcluding": "10.0.26100.33438" }, { "vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.26100.0", "versionEndExcluding": "10.0.26100.33438" } ] } ] } ], "affected": [ { "vendor": "Microsoft", "product": "Windows 10 Version 1809", "platforms": [ "32-bit Systems", "x64-based Systems" ], "versions": [ { "version": "10.0.17763.0", "lessThan": "10.0.17763.9245", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2019", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.17763.0", "lessThan": "10.0.17763.9245", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2019 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.17763.0", "lessThan": "10.0.17763.9245", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2022", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.20348.0", "lessThan": "10.0.20348.5622", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2025", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.26100.0", "lessThan": "10.0.26100.33438", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Windows Server 2025 (Server Core installation)", "platforms": [ "x64-based Systems" ], "versions": [ { "version": "10.0.26100.0", "lessThan": "10.0.26100.33438", "versionType": "custom", "status": "affected" } ] } ], "descriptions": [ { "value": "Use of uninitialized resource in Windows Failover Cluster allows an unauthorized attacker to disclose information over a network.", "lang": "en-US" } ], "problemTypes": [ { "descriptions": [ { "description": "CWE-908: Use of Uninitialized Resource", "lang": "en-US", "type": "CWE", "cweId": "CWE-908" } ] } ], "providerMetadata": { "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-09-16T21:57:55.313Z" }, "references": [ { "name": "Windows Failover Cluster Information Disclosure Vulnerability", "tags": [ "vendor-advisory", "patch" ], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72989" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en-US", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C" } } ] }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-08T19:43:55.521386Z", "id": "CVE-2026-72989", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-08T20:05:10.304Z" } } ] } }