CVE-2021-31955

Published: Jun 8, 2021Modified: Oct 30, 2025CISA KEV

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD (Secondary)

Description

Windows Kernel Information Disclosure Vulnerability

Affected (8)

Products: Microsoft: Windows 10 1809, Windows 10 1909, Windows 10 2004, Windows 10 20h2, Windows 10 21h1, Windows Server 2004, Windows Server 2019, Windows Server 20h2

8 products

Windows 10 1809

Windows 10 1909

Windows 10 2004

Windows 10 20h2

Windows 10 21h1

Windows Server 2004

Windows Server 2019

Windows Server 20h2

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1809	Before 10.0.17763.1999
Microsoft Windows 10 1909	Before 10.0.18363.1621
Microsoft Windows 10 2004	Before 10.0.19041.1052
Microsoft Windows 10 20h2	Before 10.0.19042.1052
Microsoft Windows 10 21h1	Before 10.0.19043.1052
Microsoft Windows Server 2004	Before 10.0.19041.1052
Microsoft Windows Server 2019	Before 10.0.17763.1999
Microsoft Windows Server 20h2	Before 10.0.19042.1052

Related CWEs

Exposure of Sensitive System Information to an Unauthorized Control Sphere

The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.

References (3)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955

Source: secure@microsoft.com

PatchVendor Advisory

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.