CVE-2018-8589

7.8 HIGH CISA KEV - Actively Exploited

Published: November 14, 2018 Modified: October 28, 2025

Description

An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka "Windows Win32k Elevation of Privilege Vulnerability." This affects Windows Server 2008, Windows 7, Windows Server 2008 R2.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://www.securityfocus.com/bid/105796

Source: secure@microsoft.com

Broken Link Third Party Advisory VDB Entry

http://www.securitytracker.com/id/1042140

Source: secure@microsoft.com

Broken Link Third Party Advisory VDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589

Source: secure@microsoft.com

Patch Vendor Advisory

http://www.securityfocus.com/bid/105796

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link Third Party Advisory VDB Entry

http://www.securitytracker.com/id/1042140

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link Third Party Advisory VDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589

Source: af854a3a-2127-422b-91ae-364da2661108

Patch Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8589

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

7 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.8 / 10.0

EPSS (Exploit Probability)

46.3%

98th percentile

Exploitation Status

Actively Exploited

Remediation due: 2022-06-13

Affected Vendors

microsoft