CISA-confirmed known exploited vulnerability

CVE-2020-1027

Microsoft Windows Kernel Privilege Escalation Vulnerability

Microsoft · Windows

Vulnerability details

An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.

Added to CISA KEV: 2022-05-23

Ransomware campaign use: Unknown

CISA due date: 2022-06-13

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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