CVE-2020-1027VulnerabilityPublished 05/23/2022Updated 10/24/2026

CVE-2020-1027: Microsoft Windows Kernel Privilege Escalation Vulnerability

Affects Microsoft WindowsSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/23/2022
KEV deadline: 06/13/2022
EPSS: 4.7% chance of exploitation in 30 days – higher than 91% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-1027 (opens in a new tab)

Description

CVE-2020-1027 is a Windows Kernel elevation of privilege vulnerability that allows attackers to execute code with elevated permissions by exploiting how the kernel handles objects in memory. It has been exploited in the wild. No specific affected Windows versions are stated in the provided data.

Summary

This vulnerability involves improper handling of objects in memory by the Windows Kernel, enabling an attacker to elevate privileges and execute code with higher permissions. It is identified as CWE-787 (Out-of-bounds Write). The vulnerability has been observed exploited in the wild, indicating active threat usage. No patch or remediation details are provided in the input data.

Impact

Successful exploitation allows an attacker to execute code with elevated privileges on affected Windows systems, potentially leading to full system compromise or unauthorized actions requiring higher permissions.

Mitigation

Patch status is not yet confirmed — check the Microsoft vendor advisory for current remediation guidance. Until official fixes are confirmed, apply standard security controls and monitor for exploitation attempts.

Weaknesses

CWE-787Out-of-bounds Write (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:41:17 UTC

Weaknesses

References

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