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CVE Record

CVE-2018-8166: An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handl...

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 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8120, CVE-2018-8124, CVE-2018-8164.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2018-8166 is a Windows privilege-escalation flaw in the Win32k component. An attacker would need some foothold on a vulnerable system, but successful exploitation could increase their permissions. The broad affected Windows client and server list makes legacy and unpatched estates the main business concern. Organizations running the listed Windows desktop or server versions may be exposed, especially unmanaged legacy endpoints, VDI, terminal servers, jump hosts, and Server Core systems. Prioritize remediation where vulnerable Windows systems support privileged administration, shared user access, or critical business workloads. Lack of active-exploitation evidence lowers emergency pressure, but privilege escalation can materially worsen any endpoint compromise. Mitigation focus: Review the Microsoft advisory for applicable security updates and deployment guidance.; Patch or retire affected Windows versions where updates are unavailable or unsupported.; Prioritize shared systems, admin workstations, jump hosts, and internet-adjacent Windows servers..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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description · low confidence lookup

Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-8166 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
MicrosoftWindows 732-bit Systems Service Pack 1, x64-based Systems Service Pack 1Listed
MicrosoftWindows Server 2012 R2(Server Core installation)Listed
MicrosoftWindows RT 8.1Windows RT 8.1Listed
MicrosoftWindows Server 200832-bit Systems Service Pack 2, 32-bit Systems Service Pack 2 (Server Core installation), Itanium-Based Systems Service Pack 2, x64-based Systems Service Pack 2, x64-based Systems Service Pack 2 (Server Core installation)Listed
MicrosoftWindows Server 2012(Server Core installation)Listed
MicrosoftWindows 8.132-bit systems, x64-based systemsListed
MicrosoftWindows Server 2016(Server Core installation)Listed
MicrosoftWindows Server 2008 R2Itanium-Based Systems Service Pack 1, x64-based Systems Service Pack 1, x64-based Systems Service Pack 1 (Server Core installation)Listed
MicrosoftWindows 1032-bit Systems, Version 1607 for 32-bit Systems, Version 1607 for x64-based Systems, Version 1703 for 32-bit Systems, Version 1703 for x64-based Systems, Version 1709 for 32-bit Systems, Version 1709 for x64-based Systems, Version 1803 for 32-bit Systems, Version 1803 for x64-based Systems, x64-based SystemsListed
MicrosoftWindows 10 Serversversion 1709 (Server Core Installation), version 1803 (Server Core Installation)Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.