CVE-2019-1064: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-31T21:29:15.896Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical 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.

• Context preserved from previous revision: 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. 1. Use only isolated environments and systems you own or are explicitly authorized to test.

Technical Details

• CVE: CVE-2019-1064
• KEV date added: Unknown
• KEV due date: Not specified
• NVD published: 2019-06-12
• NVD modified: 2025-10-29
• MITRE modified: 2025-10-21
• CVSS base score: 7.8
• CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
• CVSS exploitability score: 1.8
• CVSS impact score: 5.9
• Attack vector: Local
• Attack complexity: Low
• Privileges required: Low
• User interaction: None
• Scope: Unchanged
• Confidentiality impact: High
• Integrity impact: High
• Availability impact: High

Versions and Products Impacted

• microsoft / windows 10 1607
• microsoft / windows 10 1703
• microsoft / windows 10 1709
• microsoft / windows 10 1803
• microsoft / windows 10 1809
• microsoft / windows 10 1903
• microsoft / windows server 1709
• microsoft / windows server 1803
• microsoft / windows server 1903
• microsoft / windows server 2016
• microsoft / windows server 2019
• Microsoft / Windows 10 Version 1703 (versions: 10.0.0)
• Microsoft / Windows 10 Version 1803 (versions: 10.0.0)
• Microsoft / Windows Server, version 1803 (Server Core Installation) (versions: 10.0.0)
• Microsoft / Windows 10 Version 1809 (versions: 10.0.17763.0)
• Microsoft / Windows 10 Version 1809 (versions: 10.0.0)
• Microsoft / Windows Server 2019 (versions: 10.0.17763.0)
• Microsoft / Windows Server 2019 (Server Core installation) (versions: 10.0.17763.0)
• Microsoft / Windows 10 Version 1709 for 32-bit Systems (versions: 10.0.0)
• Microsoft / Windows 10 Version 1709 (versions: 10.0.0)

Weakness Classification

• CWE-59

Repositories for Lab Validation (Public Examples)

• No public repository matched this CVE query in the current run.

People and Organizations Mentioned

• microsoft

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Create low-privilege users on microsoft / windows 10 1607 and validate that patching blocks unauthorized admin-level actions.
4. Compare token/privilege transitions in Windows Event Logs before and after remediation.
5. Tune detections for unusual group membership changes and SYSTEM-level process launches from user sessions.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2019-1064
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1064
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1064
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1064
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1064

This content is for defensive security training and authorized validation only.