HIGH KEV Used in ransomware campaigns ⚠
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'
Published Apr 9, 2019 ·Due May 3, 2022
7.8
HIGHCVSS 3.1
EPSS 44.95%
Description
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 CVE ID is unique from CVE-2019-0685, CVE-2019-0859.
Affected products
-
- Version 10 Version 1607 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1607 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1703 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1703 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1709 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1709 for ARM64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1709 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1803 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1803 for ARM64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1803 for x64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1809 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 Version 1809 for ARM64-based SystemsStatusaffectedConstraints-
- Version 10 Version 1809 for x64-based SystemsStatusaffectedConstraints-
- Version 10 for 32-bit SystemsStatusaffectedConstraints-
- Version 10 for x64-based SystemsStatusaffectedConstraints-
- Version 7 for 32-bit Systems Service Pack 1StatusaffectedConstraints-
- Version 7 for x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version 8.1 for 32-bit systemsStatusaffectedConstraints-
- Version 8.1 for x64-based systemsStatusaffectedConstraints-
- Version RT 8.1StatusaffectedConstraints-
- Version
-
- Version 2008 R2 for Itanium-Based Systems Service Pack 1StatusaffectedConstraints-
- Version 2008 R2 for x64-based Systems Service Pack 1StatusaffectedConstraints-
- Version 2008 R2 for x64-based Systems Service Pack 1 (Core installation)StatusaffectedConstraints-
- Version 2008 for 32-bit Systems Service Pack 2StatusaffectedConstraints-
- Version 2008 for 32-bit Systems Service Pack 2 (Core installation)StatusaffectedConstraints-
- Version 2008 for Itanium-Based Systems Service Pack 2StatusaffectedConstraints-
- Version 2008 for x64-based Systems Service Pack 2StatusaffectedConstraints-
- Version 2008 for x64-based Systems Service Pack 2 (Core installation)StatusaffectedConstraints-
- Version 2012StatusaffectedConstraints-
- Version 2012 (Core installation)StatusaffectedConstraints-
- Version 2012 R2StatusaffectedConstraints-
- Version 2012 R2 (Core installation)StatusaffectedConstraints-
- Version 2016StatusaffectedConstraints-
- Version 2016 (Core installation)StatusaffectedConstraints-
- Version 2019StatusaffectedConstraints-
- Version 2019 (Core installation)StatusaffectedConstraints-
- Version version 1709 (Core Installation)StatusaffectedConstraints-
- Version version 1803 (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 | n/a |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Microsoft | Windows Server | n/a |
|
OR
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
- r2
- n/a
- n/a
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 Used in ransomware campaigns ⚠
Date Added
Nov 3, 2021
Patch Due
May 3, 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
44.95% 0.44954
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.44954
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 (27 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 44.95% (0.44954) | 98.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 45.23% (0.45230) | 98.62th | v5 (v2026.06.15) |
| May 20, 2026 | 88.84% (0.88840) | 99.53th | v4 (v2025.03.14) |
| Jan 5, 2026 | 90.36% (0.90359) | 99.58th | v4 (v2025.03.14) |
| Nov 21, 2025 | 87.32% (0.87316) | 99.41th | v4 (v2025.03.14) |
| Nov 18, 2025 | 68.33% (0.68330) | 98.63th | v4 (v2025.03.14) |
| Oct 22, 2025 | 86.81% (0.86813) | 99.38th | v4 (v2025.03.14) |
| Oct 17, 2025 | 80.05% (0.80049) | 99.06th | v4 (v2025.03.14) |
| Sep 25, 2025 | 78.61% (0.78606) | 99.01th | v4 (v2025.03.14) |
| Sep 15, 2025 | 82.88% (0.82877) | 99.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 84.89% (0.84886) | 99.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.57% (0.00569) | 78.58th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.61% (0.00615) | 78.81th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.53% (0.00527) | 76.30th | v3 (v2023.03.01) |
| Sep 5, 2023 | 0.53% (0.00527) | 74.08th | v3 (v2023.03.01) |
| Aug 3, 2023 | 0.45% (0.00445) | 71.61th | v3 (v2023.03.01) |
| Jul 5, 2023 | 0.39% (0.00387) | 69.46th | v3 (v2023.03.01) |
| Mar 21, 2023 | 0.48% (0.00476) | 71.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00050) | 17.54th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.91% (0.01909) | 77.43th | v2 (v2022.01.01) |
| Mar 4, 2023 | 1.91% (0.01909) | 77.42th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.91% (0.01909) | 75.42th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.91% (0.01909) | 54.58th | v2 (v2022.01.01) |
| Feb 3, 2022 | 24.37% (0.24372) | 95.46th | v1 |
| Jan 6, 2022 | 24.37% (0.24372) | 95.40th | v1 |
| Sep 1, 2021 | 24.37% (0.24372) | 98.13th | v1 |
| Apr 14, 2021 | 24.37% (0.24372) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (3)
- http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privilege-Escalation.html x_refsource_MISCThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803 x_refsource_MISCPatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0803 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privilege-Escalation.html | x_refsource_MISCThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803 | x_refsource_MISCPatchVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0803 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Apr 9, 2019
Updated Oct 21, 2025
Reserved Nov 26, 2018
Link CVE-2019-0803
CISA Vulnrichment
Updated Feb 7, 2025