CVE-2018-8120

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Summary

CVECVE-2018-8120
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-05-09 19:29:01 UTC
Updated2026-08-13 05:17:18 UTC
DescriptionAn 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 Server 2008, Windows 7, Windows Server 2008 R2. This CVE ID is unique from CVE-2018-8124, CVE-2018-8164, CVE-2018-8166.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from [email protected]

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

EPSS: 0.737210000 probability, percentile 0.994280000 (date 2026-08-13)

CISA KEV: Listed on 2022-03-15; due 2022-04-05; ransomware use Known

Problem Types: CWE-404 | Elevation of Privilege | CWE-404 CWE-404 Improper Resource Shutdown or Release

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1ADPDECLARED7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

CISA Known Exploited Vulnerability

VendorMicrosoft
ProductWin32k
NameMicrosoft Win32k Privilege Escalation Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://nvd.nist.gov/vuln/detail/CVE-2018-8120

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 7 - sp1 All All
Operating System Microsoft Windows Server 2008 - sp2 All All
Operating System Microsoft Windows Server 2008 r2 sp1 All All
Operating System Microsoft Windows Server 2008 r2 sp1 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Windows Server 2008 affected 32-bit Systems Service Pack 2 Not specified
CNA Microsoft Windows Server 2008 affected 32-bit Systems Service Pack 2 (Server Core installation) Not specified
CNA Microsoft Windows Server 2008 affected Itanium-Based Systems Service Pack 2 Not specified
CNA Microsoft Windows Server 2008 affected x64-based Systems Service Pack 2 Not specified
CNA Microsoft Windows Server 2008 affected x64-based Systems Service Pack 2 (Server Core installation) Not specified
CNA Microsoft Windows 7 affected 32-bit Systems Service Pack 1 Not specified
CNA Microsoft Windows 7 affected x64-based Systems Service Pack 1 Not specified
CNA Microsoft Windows Server 2008 R2 affected Itanium-Based Systems Service Pack 1 Not specified
CNA Microsoft Windows Server 2008 R2 affected x64-based Systems Service Pack 1 Not specified
CNA Microsoft Windows Server 2008 R2 affected x64-based Systems Service Pack 1 (Server Core installation) Not specified

References

ReferenceSourceLinkTags
Windows Kernel Multiple Flaws Let Local Users Bypass Security Restictions, Obtain Potentially Sensitive Information, and Gain Elevated Privileges on the Target System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Broken Link, Third Party Advisory, VDB Entry
Microsoft Windows - SetImeInfoEx Win32k NULL Pointer Dereference (Metasploit) - Windows local Exploit af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Exploit, Third Party Advisory, VDB Entry
Microsoft Windows Kernel 'Win32k.sys' CVE-2018-8120 Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Broken Link, Third Party Advisory, VDB Entry
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8120 af854a3a-2127-422b-91ae-364da2661108 portal.msrc.microsoft.com Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2022-03-15T00:00:00.000ZCVE-2018-8120 added to CISA KEV

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