{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20825", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2025-12-03T05:54:20.374Z", "datePublished": "2026-01-13T17:56:18.914Z", "dateUpdated": "2026-04-01T13:48:27.933Z"}, "containers": {"cna": {"title": "Windows Hyper-V Information Disclosure Vulnerability", "datePublic": "2026-01-13T16:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*", "versionStartIncluding": "10.0.17763.0", "versionEndExcluding": "10.0.17763.8276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.17763.0", "versionEndExcluding": "10.0.17763.8276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.17763.0", "versionEndExcluding": "10.0.17763.8276"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.20348.0", "versionEndExcluding": "10.0.20348.4648"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x64:*", "versionStartIncluding": "10.0.19044.0", "versionEndExcluding": "10.0.19044.6809"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*", "versionStartIncluding": "10.0.19045.0", "versionEndExcluding": "10.0.19045.6809"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.26100.0", "versionEndExcluding": "10.0.26100.32230"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*", "versionStartIncluding": "10.0.26200.0", "versionEndExcluding": "10.0.26200.7623"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*", "versionStartIncluding": "10.0.22631.0", "versionEndExcluding": "10.0.22631.6491"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*", "versionStartIncluding": "10.0.22631.0", "versionEndExcluding": "10.0.22631.6491"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_23h2:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.25398.0", "versionEndExcluding": "10.0.25398.2092"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*", "versionStartIncluding": "10.0.26100.0", "versionEndExcluding": "10.0.26100.7623"}, {"vulnerable": true, "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.26100.0", "versionEndExcluding": "10.0.26100.32230"}]}]}], "affected": [{"vendor": "Microsoft", "product": "Windows 10 Version 1809", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.17763.0", "lessThan": "10.0.17763.8276", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 21H2", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.19044.0", "lessThan": "10.0.19044.6809", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 22H2", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.19045.0", "lessThan": "10.0.19045.6809", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 11 version 22H3", "platforms": ["ARM64-based Systems"], "versions": [{"version": "10.0.22631.0", "lessThan": "10.0.22631.6491", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 11 Version 23H2", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.22631.0", "lessThan": "10.0.22631.6491", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 11 Version 24H2", "platforms": ["ARM64-based Systems", "x64-based Systems"], "versions": [{"version": "10.0.26100.0", "lessThan": "10.0.26100.7623", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 11 Version 25H2", "versions": [{"version": "10.0.26200.0", "lessThan": "10.0.26200.7623", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2019", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.17763.0", "lessThan": "10.0.17763.8276", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2019 (Server Core installation)", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.17763.0", "lessThan": "10.0.17763.8276", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2022", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.20348.0", "lessThan": "10.0.20348.4648", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2022, 23H2 Edition (Server Core installation)", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.25398.0", "lessThan": "10.0.25398.2092", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2025", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.26100.0", "lessThan": "10.0.26100.32230", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2025 (Server Core installation)", "platforms": ["x64-based Systems"], "versions": [{"version": "10.0.26100.0", "lessThan": "10.0.26100.32230", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-284: Improper Access Control", "lang": "en-US", "type": "CWE", "cweId": "CWE-284"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-04-01T13:48:27.933Z"}, "references": [{"name": "Windows Hyper-V Information Disclosure Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 4.4, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-01-13T19:38:03.387270Z", "id": "CVE-2026-20825", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2026-01-14T19:26:47.983Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20825", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-13T19:38:03.387270Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-13T19:38:05.890Z"}}], "cna": {"title": "Windows Hyper-V Information Disclosure Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 4.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": "Windows 10 Version 1809", "versions": [{"status": "affected", "version": "10.0.17763.0", "lessThan": "10.0.17763.8276", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows 10 Version 21H2", "versions": [{"status": "affected", "version": "10.0.19044.0", "lessThan": "10.0.19044.6809", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows 10 Version 22H2", "versions": [{"status": "affected", "version": "10.0.19045.0", "lessThan": "10.0.19045.6809", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows 11 version 22H3", "versions": [{"status": "affected", "version": "10.0.22631.0", "lessThan": "10.0.22631.6491", "versionType": "custom"}], "platforms": ["ARM64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows 11 Version 23H2", "versions": [{"status": "affected", "version": "10.0.22631.0", "lessThan": "10.0.22631.6491", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows 11 Version 24H2", "versions": [{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.7623", "versionType": "custom"}], "platforms": ["ARM64-based Systems", "x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows 11 Version 25H2", "versions": [{"status": "affected", "version": "10.0.26200.0", "lessThan": "10.0.26200.7623", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Windows Server 2019", "versions": [{"status": "affected", "version": "10.0.17763.0", "lessThan": "10.0.17763.8276", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2019 (Server Core installation)", "versions": [{"status": "affected", "version": "10.0.17763.0", "lessThan": "10.0.17763.8276", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2022", "versions": [{"status": "affected", "version": "10.0.20348.0", "lessThan": "10.0.20348.4648", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2022, 23H2 Edition (Server Core installation)", "versions": [{"status": "affected", "version": "10.0.25398.0", "lessThan": "10.0.25398.2092", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2025", "versions": [{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.32230", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2025 (Server Core installation)", "versions": [{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.32230", "versionType": "custom"}], "platforms": ["x64-based Systems"]}], "datePublic": "2026-01-13T16:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825", "name": "Windows Hyper-V Information Disclosure Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-284", "description": "CWE-284: Improper Access Control"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "10.0.17763.8276", "versionStartIncluding": "10.0.17763.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.17763.8276", "versionStartIncluding": "10.0.17763.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.17763.8276", "versionStartIncluding": "10.0.17763.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.20348.4648", "versionStartIncluding": "10.0.20348.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "10.0.19044.6809", "versionStartIncluding": "10.0.19044.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "10.0.19045.6809", "versionStartIncluding": "10.0.19045.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.26100.32230", "versionStartIncluding": "10.0.26100.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*", "vulnerable": true, "versionEndExcluding": "10.0.26200.7623", "versionStartIncluding": "10.0.26200.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*", "vulnerable": true, "versionEndExcluding": "10.0.22631.6491", "versionStartIncluding": "10.0.22631.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*", "vulnerable": true, "versionEndExcluding": "10.0.22631.6491", "versionStartIncluding": "10.0.22631.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_23h2:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.25398.2092", "versionStartIncluding": "10.0.25398.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*", "vulnerable": true, "versionEndExcluding": "10.0.26100.7623", "versionStartIncluding": "10.0.26100.0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "10.0.26100.32230", "versionStartIncluding": "10.0.26100.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-04-01T13:48:27.933Z"}}}, "cveMetadata": {"cveId": "CVE-2026-20825", "state": "PUBLISHED", "dateUpdated": "2026-04-01T13:48:27.933Z", "dateReserved": "2025-12-03T05:54:20.374Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2026-01-13T17:56:18.914Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*", "matchCriteriaId": "DD4CBDAB-7626-4048-8474-B1BD9C1F3255", "versionEndExcluding": "10.0.17763.8276", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*", "matchCriteriaId": "E481E93D-D86E-4B65-93E5-200327C348C8", "versionEndExcluding": "10.0.19044.6809", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*", "matchCriteriaId": "5ACD940D-CA6A-402B-B132-E5A66139C44F", "versionEndExcluding": "10.0.19045.6809", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "8D675DAA-4DCE-4727-BE5F-C954BBD252C4", "versionEndExcluding": "10.0.22631.6491", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "D249551B-1433-4E5E-A587-40F782E91E09", "versionEndExcluding": "10.0.26100.7623", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "22082D4E-E68F-4E48-98FB-42DFDEE2E2A8", "versionEndExcluding": "10.0.26200.7623", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*", "matchCriteriaId": "A74970A1-CC81-4482-B465-8382B1544EF3", "versionEndExcluding": "10.0.17763.8276", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*", "matchCriteriaId": "C4AA6991-DE34-48F6-AFD3-77CEE7FBB692", "versionEndExcluding": "10.0.20348.4648", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "BA5947E0-C44C-4517-A307-DA79752F30A8", "versionEndExcluding": "10.0.25398.2092", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*", "matchCriteriaId": "D44880ED-E8E9-49A8-BD56-503C63D40000", "versionEndExcluding": "10.0.26100.32230", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally."}], "id": "CVE-2026-20825", "lastModified": "2026-01-15T13:18:07.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-01-13T18:16:09.990", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{}

{}