HIGH KEV Used in ransomware campaigns ⚠
Windows Elevation of Privilege Vulnerability
Published Jun 12, 2019 ·Due Apr 5, 2022
7.8
HIGHCVSS 3.1
EPSS 6.89%
Description
An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. An attacker could then install programs; view, change or delete data. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The security update addresses the vulnerability by correcting how Windows AppX Deployment Service handles hard links.
Affected products
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- Version 10.0.14393.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
- Version 10.0.17763.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.14393.0StatusaffectedConstraints<publication
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- Version 10.0.14393.0StatusaffectedConstraints<publication
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- Version 10.0.17763.0StatusaffectedConstraints<publication
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- Version 10.0.17763.0StatusaffectedConstraints<publication
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
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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 10 Version 1607 | n/a |
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| Microsoft | Windows 10 Version 1703 | n/a |
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| Microsoft | Windows 10 Version 1709 | n/a |
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| Microsoft | Windows 10 Version 1709 for 32-bit Systems | n/a |
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| Microsoft | Windows 10 Version 1803 | n/a |
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| Microsoft | Windows 10 Version 1809 | n/a |
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| Microsoft | Windows 10 Version 1903 for 32-bit Systems | n/a |
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| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | n/a |
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| Microsoft | Windows 10 Version 1903 for x64-based Systems | n/a |
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| Microsoft | Windows Server 2016 | n/a |
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| Microsoft | Windows Server 2016 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2019 | n/a |
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| Microsoft | Windows Server 2019 (Server Core installation) | n/a |
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| Microsoft | Windows Server, version 1803 (Server Core Installation) | n/a |
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| Microsoft | Windows Server, version 1903 (Server Core installation) | n/a |
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OR
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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
1 other source (CVE.org) ▾
7.8 HIGH CVE.org
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
Exploit Maturity Proof of Concept
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
Mar 15, 2022
Patch Due
Apr 5, 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
6.89% 0.06886
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06886
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 (40 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.89% (0.06886) | 93.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.89% (0.06886) | 93.22th | v5 (v2026.06.15) |
| Mar 17, 2026 | 12.42% (0.12420) | 93.81th | v4 (v2025.03.14) |
| Nov 21, 2025 | 11.34% (0.11342) | 93.26th | v4 (v2025.03.14) |
| Nov 18, 2025 | 8.46% (0.08461) | 91.47th | v4 (v2025.03.14) |
| Oct 30, 2025 | 11.87% (0.11869) | 93.43th | v4 (v2025.03.14) |
| Oct 16, 2025 | 16.45% (0.16450) | 94.57th | v4 (v2025.03.14) |
| Jul 14, 2025 | 13.51% (0.13514) | 93.88th | v4 (v2025.03.14) |
| Jun 15, 2025 | 15.54% (0.15538) | 94.33th | v4 (v2025.03.14) |
| May 21, 2025 | 14.52% (0.14517) | 94.08th | v4 (v2025.03.14) |
| Apr 14, 2025 | 11.56% (0.11558) | 93.00th | v4 (v2025.03.14) |
| Apr 5, 2025 | 13.87% (0.13869) | 93.72th | v4 (v2025.03.14) |
| Mar 25, 2025 | 12.00% (0.11997) | 93.08th | v4 (v2025.03.14) |
| Mar 20, 2025 | 9.56% (0.09557) | 92.20th | v4 (v2025.03.14) |
| Mar 19, 2025 | 12.78% (0.12775) | 93.15th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.56% (0.09557) | 92.28th | v4 (v2025.03.14) |
| Feb 25, 2025 | 68.95% (0.68949) | 98.23th | v3 (v2023.03.01) |
| Jan 29, 2025 | 77.63% (0.77626) | 98.47th | v3 (v2023.03.01) |
| Nov 23, 2024 | 81.79% (0.81786) | 98.49th | v3 (v2023.03.01) |
| Sep 20, 2024 | 85.95% (0.85948) | 98.61th | v3 (v2023.03.01) |
| Jun 23, 2024 | 87.93% (0.87930) | 98.69th | v3 (v2023.03.01) |
| Apr 17, 2024 | 87.73% (0.87735) | 98.61th | v3 (v2023.03.01) |
| Mar 12, 2024 | 87.48% (0.87481) | 98.55th | v3 (v2023.03.01) |
| Feb 7, 2024 | 88.08% (0.88076) | 98.43th | v3 (v2023.03.01) |
| Jan 6, 2024 | 87.88% (0.87880) | 98.39th | v3 (v2023.03.01) |
| Oct 24, 2023 | 88.81% (0.88811) | 98.36th | v3 (v2023.03.01) |
| Aug 22, 2023 | 90.67% (0.90669) | 98.42th | v3 (v2023.03.01) |
| Jul 22, 2023 | 92.13% (0.92134) | 98.52th | v3 (v2023.03.01) |
| Jun 19, 2023 | 93.65% (0.93652) | 98.68th | v3 (v2023.03.01) |
| May 19, 2023 | 93.50% (0.93500) | 98.62th | v3 (v2023.03.01) |
| Mar 14, 2023 | 93.59% (0.93588) | 98.54th | v3 (v2023.03.01) |
| Mar 7, 2023 | 93.43% (0.93434) | 98.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.64% (0.01641) | 75.92th | v2 (v2022.01.01) |
| May 21, 2022 | 1.64% (0.01641) | 74.11th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.37% (0.01372) | 69.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.37% (0.01372) | 45.59th | v2 (v2022.01.01) |
| Feb 3, 2022 | 17.64% (0.17642) | 92.83th | v1 |
| Jan 6, 2022 | 17.64% (0.17642) | 92.74th | v1 |
| Sep 1, 2021 | 17.64% (0.17642) | 97.74th | v1 |
| Apr 14, 2021 | 17.64% (0.17642) | 0.00th | v1 |
Weaknesses (1)
References (3)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064 vendor-advisoryPatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1064 PatchVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1064 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064 | vendor-advisoryPatchVendor Advisory | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1064 | PatchVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1064 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Jun 12, 2019
Updated Oct 21, 2025
Reserved Nov 26, 2018
Link CVE-2019-1064
CISA Vulnrichment
Updated Feb 7, 2025