Microsoft Windows Kernel Information Disclosure Vulnerability

MEDIUM 5.5EXPLOITED (CISA KEV)CVE-2021-31955 · Published 08/06/2021 · updated 17/06/2026

Microsoft Windows Kernel Information Disclosure Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 03/11/2021. Patch affected systems as an emergency.

Package	Affected versions	Patched versions
Windows Microsoft	Versions not published yet (product named by CISA KEV)

Description

Windows Kernel Information Disclosure Vulnerability

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 · Patch
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2021-31955

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