CVE-2021-31955 (GCVE-0-2021-31955)
Vulnerability from cvelistv5
Published
2021-06-08 22:46
Modified
2025-10-21 23:25
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C
CWE
  • Information Disclosure
Summary
Windows Kernel Information Disclosure Vulnerability
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1809 Version: 10.0.0   < 10.0.17763.1999
    cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.1999:*:*:*:*:*:x86:*
    cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.1999:*:*:*:*:*:x64:*
    cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.1999:*:*:*:*:*:arm64:*
 Create a notification for this product.
   Microsoft Windows Server 2019 Version: 10.0.0   < 10.0.17763.1999
    cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.1999:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows Server 2019 (Server Core installation) Version: 10.0.0   < 10.0.17763.1999
    cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.1999:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows 10 Version 1909 Version: 10.0.0   < 10.0.18363.1621
    cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1621:*:*:*:*:*:x86:*
    cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1621:*:*:*:*:*:x64:*
    cpe:2.3:o:microsoft:windows_10_1809:10.0.18363.1621:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows 10 Version 21H1 Version: 10.0.0   < 10.0.19043.1052
    cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1052:*:*:*:*:*:x64:*
    cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1052:*:*:*:*:*:arm64:*
    cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1052:*:*:*:*:*:x86:*
 Create a notification for this product.
   Microsoft Windows 10 Version 2004 Version: 10.0.0   < 10.0.19041.1052
    cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1052:*:*:*:*:*:x64:*
 Create a notification for this product.
   Microsoft Windows Server version 2004 Version: 10.0.0   < 10.0.19041.1052
    cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1052:*:*:*:*:*:*:*
 Create a notification for this product.
   Microsoft Windows 10 Version 20H2 Version: 10.0.0   < 10.0.19042.1052
    cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1052:*:*:*:*:*:x86:*
    cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1052:*:*:*:*:*:arm64:*
 Create a notification for this product.
   Microsoft Windows Server version 20H2 Version: 10.0.0   < 10.0.19042.1052
    cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1052:*:*:*:*:*:*:*
 Create a notification for this product.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2021-11-03

Due date: 2021-11-17

Required action: Apply updates per vendor instructions.

Used in ransomware: Unknown

Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-31955

Show details on NVD website

To clipboard 

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\"x_transferred\"], \"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955\"}]}, {\"metrics\": [{\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955\"}}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-31955\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-04T15:41:51.560173Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-497\", \"description\": \"CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-29T18:16:53.678Z\"}, \"timeline\": [{\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00+00:00\", \"value\": \"CVE-2021-31955 added to KEV\"}, {\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00+00:00\", \"value\": \"CVE-2021-31955 added to CISA KEV\"}], \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"assignerShortName\": \"microsoft\", \"cveId\": \"CVE-2021-31955\", \"datePublished\": \"2021-06-08T22:46:25.000Z\", \"dateReserved\": \"2021-04-30T00:00:00.000Z\", \"dateUpdated\": \"2025-10-21T18:49:29.755Z\", \"state\": \"PUBLISHED\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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