{"containers": {"cna": {"title": "Windows Elevation of Privilege Vulnerability", "datePublic": "2021-07-20T07:00:00.000Z", "affected": [{"vendor": "Microsoft", "product": "Windows 10 Version 1809", "cpes": ["cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:x86:*", "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:x64:*", "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2114:*:*:*:*:*:arm64:*"], "platforms": ["32-bit Systems", "x64-based Systems", "ARM64-based Systems"], "versions": [{"version": "10.0.0", "lessThan": "10.0.17763.2114", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 1909", "cpes": ["cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1734:*:*:*:*:*:x86:*", "cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1734:*:*:*:*:*:x64:*", "cpe:2.3:o:microsoft:windows_10_1809:10.0.18363.1734:*:*:*:*:*:x64:*"], "platforms": ["32-bit Systems", "x64-based Systems", "ARM64-based Systems"], "versions": [{"version": "10.0.0", "lessThan": "10.0.18363.1734", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 21H1", "cpes": ["cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:x64:*", "cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:arm64:*", "cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:x86:*"], "platforms": ["x64-based Systems", "ARM64-based Systems", "32-bit Systems"], "versions": [{"version": "10.0.0", "lessThan": "10.0.19043.1165", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 2004", "cpes": ["cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1165:*:*:*:*:*:x64:*"], "platforms": ["32-bit Systems", "ARM64-based Systems", "x64-based Systems"], "versions": [{"version": "10.0.0", "lessThan": "10.0.19041.1165", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 20H2", "cpes": ["cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165:*:*:*:*:*:x86:*", "cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165:*:*:*:*:*:arm64:*"], "platforms": ["32-bit Systems", "ARM64-based Systems"], "versions": [{"version": "10.0.0", "lessThan": "10.0.19042.1165", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "<p>An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. 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{"cisaActionDue": "2022-02-24", "cisaExploitAdd": "2022-02-10", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Microsoft Windows SAM Local Privilege Escalation Vulnerability", "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*", "matchCriteriaId": "F8D40D82-1D88-4CF1-B961-F9F28426C56B", "versionEndExcluding": "10.0.17763.2114", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*", "matchCriteriaId": "3DD2BDE6-67C6-48E2-BED0-12E4CC7EE6BC", "versionEndExcluding": "10.0.18363.1734", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*", "matchCriteriaId": "70336A6A-DE45-4604-BE81-10DA4DF12D3F", "versionEndExcluding": "10.0.19041.1165", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*", "matchCriteriaId": "7AB7321A-1F89-48B3-8E5A-94791AB2BC86", "versionEndExcluding": "10.0.19042.1165", "vulnerable": true}, {"criteria": "cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A860F2B-0533-46F7-879E-B932E4E44F0D", "versionEndExcluding": "10.0.19043.1165", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "<p>An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p>\n<p>An attacker must have the ability to execute code on a victim system to exploit this vulnerability.</p>\n<p>After installing this security update, you <em>must</em> manually delete all shadow copies of system files, including the SAM database, to fully mitigate this vulnerabilty. <strong>Simply installing this security update will not fully mitigate this vulnerability.</strong> See <a href=\"https://support.microsoft.com/topic/1ceaa637-aaa3-4b58-a48b-baf72a2fa9e7\">KB5005357- Delete Volume Shadow Copies</a>.</p>\n"}, {"lang": "es", "value": "Una Vulnerabilidad de Elevaci\u00f3n de Privilegios en Windows"}], "id": "CVE-2021-36934", "lastModified": "2025-03-07T21:54:07.007", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Secondary"}]}, "published": "2021-07-22T07:15:11.013", "references": [{"source": "secure@microsoft.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/164006/HiveNightmare-AKA-SeriousSAM.html"}, {"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36934"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/164006/HiveNightmare-AKA-SeriousSAM.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36934"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.kb.cert.org/vuls/id/506989"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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