CVE-2021-31955

MediumCVSS 5.5/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

Windows Kernel Information Disclosure Vulnerability

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1809>= 10.0.0, < 10.0.17763.1999
MicrosoftWindows Server 2019>= 10.0.0, < 10.0.17763.1999
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.0, < 10.0.17763.1999
MicrosoftWindows 10 Version 1909>= 10.0.0, < 10.0.18363.1621
MicrosoftWindows 10 Version 21H1>= 10.0.0, < 10.0.19043.1052
MicrosoftWindows 10 Version 2004>= 10.0.0, < 10.0.19041.1052
MicrosoftWindows Server version 2004>= 10.0.0, < 10.0.19041.1052
MicrosoftWindows 10 Version 20H2>= 10.0.0, < 10.0.19042.1052
MicrosoftWindows Server version 20H2>= 10.0.0, < 10.0.19042.1052

References

Timeline

Published
Jun 8, 2021
Last modified
Jun 17, 2026
Added to CISA KEV
Nov 3, 2021
NVD status
Analyzed

Related CVEs from 2021

CVE-2021-31955: Medium severity, CVSS 5.5 | Vulnix