CVE-2018-8453

7.8

HIGHCVSS v3.1 Base Score

81.33%

HIGH RiskEPSS (99th percentile)

KEV

NVD-CWE-noinfo

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

Published: 10/10/2018

Modified: 10/28/2025

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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Win32k Privilege Escalation Vulnerability

Vendor / Product:

Microsoft Win32k

Required Action:

Apply updates per vendor instructions.

Due Date: 7/21/2022(OVERDUE)

Ransomware Campaign Use

Added to KEV:

1/21/2022

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2018-8453

View CISA KEV Catalog

Vulnerability Summary

CVSS v3 Score

7.8HIGH

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

CVSS v2 Score

7.2

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Score (Exploitation Probability)

81.33%HIGH Exploitation Risk

99th percentile

This vulnerability has a 81.33% probability of being exploited in the next 30 days, ranking higher than 99% of all scored CVEs.

CWE Classification

NVD-CWE-noinfo

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