CVE-2019-1064 (GCVE-0-2019-1064)
Vulnerability from cvelistv5 – Published: 2019-06-12 13:49 – Updated: 2025-10-21 23:45Title
Windows Elevation of Privilege Vulnerability
Summary
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.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 16:16 UTC
CWE
- Elevation of Privilege
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisory |
| https://portal.msrc.microsoft.com/en-US/security-… | x_refsource_MISCx_transferred |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
16 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1703 |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1803 |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows Server, version 1803 (Server Core Installation) |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1709 for 32-bit Systems |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1709 |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1903 for x64-based Systems |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows Server, version 1903 (Server Core installation) |
Affected:
10.0.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < publication
(custom)
|
guessed | |
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < publication
(custom)
|
guessed |
Date Public
2019-06-11 07:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3c9f4ee5-73f3-4f61-88d5-b1b228b6777d
Exploited: Yes
Timestamps
First Seen: 2022-03-15
Asserted: 2022-03-15
Scope
Notes: KEV entry: Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability | Affected: Microsoft / Windows | Description: A privilege escalation vulnerability exists when Windows AppXSVC improperly handles hard links. An attacker who successfully exploited this vulnerability could run processes in an elevated context. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-05 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2019-1064
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-59 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Windows |
| Due Date | 2022-04-05 |
| Date Added | 2022-03-15 |
| Vendorproject | Microsoft |
| Vulnerabilityname | Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Created: 2026-02-02 12:28 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1627bf97-fe55-41df-a605-e252b59979c3
Exploited: Yes
Timestamps
First Seen: 2022-03-15
Asserted: 2022-03-15
Scope
Notes: KEVIntel entry: Windows Elevation of Privilege Vulnerability | Affected: Microsoft / Windows 10 Version 1703, Windows 10 Version 1803, Windows Server, version 1803 (Server Core Installation), Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation), Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation) | CVSS: 7.8 (HIGH) | Used in malware: yes | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Windows Elevation of Privilege Vulnerability |
| Vendor | Microsoft |
| Product | Windows 10 Version 1703, Windows 10 Version 1803, Windows Server, version 1803 (Server Core Installation), Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1709 for 32-bit Systems, Windows 10 Version 1709, Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation), Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation) |
| Added Date | 2022-03-15T00:00:00.000Z |
| Cvss Score | 7.8 |
| Epss Score | None |
| Cvss Severity | HIGH |
| Epss Percentile | None |
| Used In Malware | yes |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Elevation of Privilege",
"lang": "en-US",
"type": "Impact"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-05-20T17:50:21.074Z",
"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"shortName": "microsoft"
},
"references": [
{
"name": "Windows Elevation of Privilege Vulnerability",
"tags": [
"vendor-advisory"
],
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064"
}
],
"title": "Windows Elevation of Privilege Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
"assignerShortName": "microsoft",
"cveId": "CVE-2019-1064",
"datePublished": "2019-06-12T13:49:41.000Z",
"dateReserved": "2018-11-26T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:45:34.956Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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