# CVE-2019-1064: Windows Elevation of Privilege Vulnerability

> CVE-2019-1064: Windows Elevation of Privilege Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2019-1064
Last updated: 2025-10-21T23:45:34Z

- Published: 2019-06-12 13:49 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: microsoft
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: 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
- EPSS: 6.9%, 94th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-03-15, federal due date 2022-04-05, ransomware use: Known

## 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft: Windows 10 Version 1607
- Microsoft: Windows 10 Version 1703
- Microsoft: Windows 10 Version 1709
- Microsoft: Windows 10 Version 1709 for 32-bit Systems
- Microsoft: Windows 10 Version 1803
- Microsoft: Windows 10 Version 1809
- Microsoft: Windows 10 Version 1903 for 32-bit Systems
- Microsoft: Windows 10 Version 1903 for ARM64-based Systems
- Microsoft: Windows 10 Version 1903 for x64-based Systems
- Microsoft: Windows Server 2016
- Microsoft: Windows Server 2016 (Server Core installation)
- Microsoft: Windows Server 2019
- Microsoft: Windows Server 2019 (Server Core installation)
- Microsoft: Windows Server, version 1803  (Server Core Installation)
- Microsoft: Windows Server, version 1903 (Server Core installation)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-1064)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2019-1064)
- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2019-1064 · Markdown: https://rewindex.com/cve/CVE-2019-1064.md · JSON: https://rewindex.com/api/v1/cves/CVE-2019-1064 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:46:51.643Z