HIGH KEV
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
Published Nov 14, 2018 ·Due Jun 13, 2022
7.8
HIGHCVSS 3.1
EPSS 3.02%
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.
Affected products
-
- Version 32-bit Systems Service Pack 1StatusaffectedConstraints-
- Version x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version
-
- Version 32-bit Systems Service Pack 2StatusaffectedConstraints-
- Version 32-bit Systems Service Pack 2 (Server Core installation)StatusaffectedConstraints-
- Version Itanium-Based Systems Service Pack 2StatusaffectedConstraints-
- Version x64-based Systems Service Pack 2StatusaffectedConstraints-
- Version x64-based Systems Service Pack 2 (Server Core installation)StatusaffectedConstraints-
- Version
-
- Version Itanium-Based Systems Service Pack 1StatusaffectedConstraints-
- Version x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version x64-based Systems Service Pack 1 (Server Core installation)StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Windows 7 | n/a |
| ||||||||||||||||||
| Microsoft | Windows Server 2008 | n/a |
| ||||||||||||||||||
| Microsoft | Windows Server 2008 R2 | n/a |
|
OR
- n/a
- n/a
- r2
- r2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.2 HIGH NVD
AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
Listed in CISA KEV KEV
Date Added
May 23, 2022
Patch Due
Jun 13, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 7, 2025 · SSVC 2.0.3
3.02% 0.03023
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03023
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (31 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.02% (0.03023) | 86.99th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.05% (0.03048) | 85.78th | v5 (v2026.06.15) |
| Apr 4, 2026 | 50.44% (0.50438) | 97.83th | v4 (v2025.03.14) |
| Nov 21, 2025 | 46.85% (0.46849) | 97.52th | v4 (v2025.03.14) |
| Nov 18, 2025 | 56.86% (0.56857) | 98.06th | v4 (v2025.03.14) |
| Nov 8, 2025 | 46.26% (0.46257) | 97.50th | v4 (v2025.03.14) |
| Oct 29, 2025 | 40.32% (0.40321) | 97.17th | v4 (v2025.03.14) |
| Oct 22, 2025 | 12.13% (0.12132) | 93.48th | v4 (v2025.03.14) |
| Aug 23, 2025 | 4.18% (0.04183) | 88.24th | v4 (v2025.03.14) |
| Apr 5, 2025 | 5.27% (0.05275) | 89.09th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.40% (0.01398) | 78.64th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.52% (0.03525) | 79.19th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.40% (0.01398) | 79.10th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.40% (0.02401) | 89.60th | v3 (v2023.03.01) |
| Dec 12, 2024 | 0.18% (0.00183) | 56.93th | v3 (v2023.03.01) |
| Jul 3, 2024 | 0.13% (0.00129) | 48.15th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.10% (0.00101) | 40.34th | v3 (v2023.03.01) |
| Jan 18, 2024 | 0.12% (0.00118) | 45.84th | v3 (v2023.03.01) |
| Nov 7, 2023 | 0.10% (0.00101) | 41.32th | v3 (v2023.03.01) |
| Aug 14, 2023 | 0.09% (0.00089) | 36.94th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.11% (0.00115) | 44.23th | v3 (v2023.03.01) |
| Apr 26, 2023 | 0.12% (0.00124) | 45.44th | v3 (v2023.03.01) |
| Apr 11, 2023 | 0.29% (0.00286) | 64.00th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00217) | 57.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.42% (0.01418) | 73.14th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.42% (0.01418) | 71.15th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.42% (0.01418) | 50.43th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.76% (0.08756) | 86.41th | v1 |
| Jan 6, 2022 | 8.76% (0.08756) | 86.25th | v1 |
| Sep 1, 2021 | 8.76% (0.08756) | 93.70th | v1 |
| Apr 14, 2021 | 8.76% (0.08756) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (4)
- http://www.securityfocus.com/bid/105796 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1042140 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589 x_refsource_CONFIRMPatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8589 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105796 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1042140 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8589 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Nov 14, 2018
Updated Oct 21, 2025
Reserved Mar 14, 2018
Link CVE-2018-8589
CISA Vulnrichment
Updated Feb 7, 2025