Vulnerability Intelligence Report
Microsoft Win32k Privilege Escalation Vulnerability
CVE-2018-8589
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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:3.05%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Windows Server 2008 | 32-bit Systems Service Pack 2 (affected), 32-bit Systems Service Pack 2 (Server Core installation) (affected), Itanium-Based Systems Service Pack 2 (affected), x64-based Systems Service Pack 2 (affected), x64-based Systems Service Pack 2 (Server Core installation) (affected) |
| Microsoft | Windows 7 | 32-bit Systems Service Pack 1 (affected), x64-based Systems Service Pack 1 (affected) |
| Microsoft | Windows Server 2008 R2 | Itanium-Based Systems Service Pack 1 (affected), x64-based Systems Service Pack 1 (affected), x64-based Systems Service Pack 1 (Server Core installation) (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2018-03-14T00:00:00 |
| Published | 2018-11-14T01:00:00 |
| Patch Date | 2018-11-13 |
| Last Updated | 2025-10-21T23:45:47 |
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