CVE-2021-31955

Known Exploited

Windows Kernel Information Disclosure Vulnerability

Description

Windows Kernel Information Disclosure Vulnerability

References

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

Frequently Asked Questions

What is the severity of CVE-2021-31955?: CVE-2021-31955 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31955?: To fix CVE-2021-31955, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31955 being actively exploited in the wild?: It is confirmed that CVE-2021-31955 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31955?: CVE-2021-31955 affects Microsoft Windows 10 Version 1809, Microsoft Windows Server 2019, Microsoft Windows Server 2019 (Server Core installation), Microsoft Windows 10 Version 1909, Microsoft Windows 10 Version 21H1, Microsoft Windows 10 Version 2004, Microsoft Windows Server version 2004, Microsoft Windows 10 Version 20H2, Microsoft Windows Server version 20H2.

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Description

Category

CWE-497 – Exposure of Sensitive System Information to an Unauthorized Control Sphere

References

Frequently Asked Questions