CVE-2021-31955

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-31955
Windows Kernel Information Disclosure Vulnerability

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1 /10

CVSS v2.0 : LOW

V2 Legend

Vector : AV:L/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References
Link Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 Patch Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 Patch Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955 US Government Resource
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*
History

30 Oct 2025, 19:40

Type Values Removed Values Added
References () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955 - () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955 - US Government Resource

22 Oct 2025, 00:17

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955 -

21 Oct 2025, 20:18

Type Values Removed Values Added
References
  • {'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955', 'source': '134c704f-9b21-4f2e-91b3-4a467353bcc0'}

21 Oct 2025, 19:19

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955 -

21 Nov 2024, 06:06

Type Values Removed Values Added
References () https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 - Patch, Vendor Advisory () https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 - Patch, Vendor Advisory

29 Jul 2024, 17:34

Type Values Removed Values Added
CPE cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*		 cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*
First Time Microsoft windows 10 2004
Microsoft windows 10 1909
Microsoft windows 10 21h1
Microsoft windows 10 20h2
Microsoft windows 10 1809
Microsoft windows Server 20h2
Microsoft windows Server 2004
CWE CWE-200 NVD-CWE-noinfo

03 Jul 2024, 01:36

Type Values Removed Values Added
CWE CWE-497

10 Jun 2021, 18:04

Type Values Removed Values Added
CPE cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
References (MISC) https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 - (MISC) https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 - Patch, Vendor Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : 2.1
v3 : 5.5
CWE CWE-200

08 Jun 2021, 23:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-06-08 23:15

Updated : 2025-10-30 19:40

NVD link : CVE-2021-31955

Mitre link : CVE-2021-31955

CVE.ORG link : CVE-2021-31955

JSON object : View

Products Affected

microsoft

  • windows_10_2004
  • windows_10_1809
  • windows_10_20h2
  • windows_server_2004
  • windows_server_20h2
  • windows_server_2019
  • windows_10_21h1
  • windows_10_1909
CWE
NVD-CWE-noinfo CWE-497

Exposure of Sensitive System Information to an Unauthorized Control Sphere