CVE-2021-43893

CVSS V2 Medium 6 CVSS V3 High 7.5
Description
Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability
Overview
  • CVE ID
  • CVE-2021-43893
  • Assigner
  • secure@microsoft.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-15T15:15:11
  • Last Modified Date
  • 2022-07-12T17:42:04
Weakness Enumerations
CWE URL
CWE-668 http://cwe.mitre.org/data/definitions/668.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* 1 OR
cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server:20h2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server:2022:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp2:*:*:*:*:x64:* 1 OR
cpe:2.3:o:microsoft:windows_server_2008:r2:sp2:*:*:*:*:x86:* 1 OR
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 6.8
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.6
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43893 Patch Vendor Advisory
http://packetstormsecurity.com/files/165560/Microsoft-Windows-EFSRPC-Arbitrary-File-Upload-Privilege-Escalation.html Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-43893
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43893
History
Created Old Value New Value Data Type Notes
2022-05-10 06:30:06 Added to TrackCVE
2022-12-06 03:58:21 2021-12-15T15:15Z 2021-12-15T15:15:11 CVE Published Date updated
2022-12-06 03:58:21 2022-07-12T17:42:04 CVE Modified Date updated
2022-12-06 03:58:21 Analyzed Vulnerability Status updated