{"containers": {"cna": {"title": "Microsoft Windows Folder Redirection Elevation of Privilege Vulnerability", "datePublic": "2021-03-09T08:00:00+00:00", "affected": [{"vendor": "Microsoft", "product": "Windows 10 Version 2004", "cpes": [], "platforms": ["32-bit Systems", "ARM64-based Systems", "x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server version 2004", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 20H2", "cpes": [], "platforms": ["32-bit Systems", "ARM64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server version 20H2", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 10 Version 1803", "cpes": [], "platforms": ["32-bit 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Service Pack 1", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows 8.1", "cpes": [], "platforms": ["32-bit Systems", "x64-based Systems", "ARM64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2008 Service Pack 2", "cpes": [], "platforms": ["32-bit Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2008 Service Pack 2 (Server Core installation)", "cpes": [], "platforms": ["32-bit Systems", "x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2008 Service Pack 2", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2008 R2 Service Pack 1", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2008 R2 Service Pack 1 (Server Core installation)", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": "N/A", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2012", "cpes": ["cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*"], "platforms": ["x64-based Systems"], "versions": [{"version": "6.2.0", "lessThan": "publication", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2012 (Server Core installation)", "cpes": ["cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*"], "platforms": ["x64-based Systems"], "versions": [{"version": "6.2.0", "lessThan": "publication", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Windows Server 2012 R2", "cpes": [], "platforms": ["x64-based Systems"], "versions": [{"version": 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When folder redirection file server is co-located with Terminal server, an attacker who successfully exploited the vulnerability would be able to begin redirecting another user's personal data to a created folder.</p>\n<p>To exploit the vulnerability, an attacker can create a new folder under the Folder Redirection root path and create a junction on a newly created User folder. When the new user logs in, Folder Redirection would start redirecting to the folder and copying personal data.</p>\n<p>This elevation of privilege vulnerability can only be addressed by reconfiguring Folder Redirection with Offline files and restricting permissions, and NOT via a security update for affected Windows Servers. See the <strong>FAQ</strong> section of this CVE for configuration guidance.</p>\n", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "Elevation of Privilege", "lang": "en-US", "type": "Impact"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2023-12-29T20:09:12.476Z"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26887"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]}}, "cveMetadata": {"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "assignerShortName": "microsoft", "cveId": "CVE-2021-26887", "datePublished": "2021-03-11T15:42:16", "dateReserved": "2021-02-08T00:00:00", "dateUpdated": "2023-12-29T20:09:12.476Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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