CVE-2019-0841: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-31T21:29:13.407Z. 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, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836.

• Context preserved from previous revision: An elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0730, CVE-2019-0731, CVE-2019-0796, CVE-2019-0805, CVE-2019-0836. Notes: Automation for internal Windows Penetrationtest / AD-Security

Technical Details

• CVE: CVE-2019-0841
• KEV date added: Unknown
• KEV due date: Not specified
• NVD published: 2019-04-10
• 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 1703
• microsoft / windows 10 1709
• microsoft / windows 10 1803
• microsoft / windows 10 1809
• microsoft / windows server 2016 (versions: 1803)
• microsoft / windows server 2019
• Microsoft / Windows (versions: 10 Version 1703 for 32-bit Systems, 10 Version 1703 for x64-based Systems, 10 Version 1709 for 32-bit Systems, 10 Version 1709 for x64-based Systems, 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for 32-bit Systems, 10 Version 1809 for x64-based Systems, 10 Version 1809 for ARM64-based Systems)
• Microsoft / Windows Server (versions: version 1709 (Core Installation), version 1803 (Core Installation), 2019, 2019 (Core installation))

Weakness Classification

• CWE-59
• Elevation of Privilege

Repositories for Lab Validation (Public Examples)

• S3cur3Th1sSh1t/WinPwn | stars: 3652 | updated: 2026-03-31 | https://github.com/S3cur3Th1sSh1t/WinPwn
  Notes: Automation for internal Windows Penetrationtest / AD-Security
• GhostTroops/TOP | stars: 721 | updated: 2026-03-31 | https://github.com/GhostTroops/TOP
  Notes: TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
• Ostorlab/KEV | stars: 608 | updated: 2026-03-23 | https://github.com/Ostorlab/KEV
  Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
• CVEDB/awesome-cve-repo | stars: 9 | updated: 2026-03-10 | https://github.com/CVEDB/awesome-cve-repo
• CVEDB/top | stars: 2 | updated: 2026-01-17 | https://github.com/CVEDB/top

People and Organizations Mentioned

• microsoft
• S3cur3Th1sSh1t
• GhostTroops
• Ostorlab
• CVEDB

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 1703 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-2019-0841
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2019-0841
• 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
• http://packetstormsecurity.com/files/152463/Microsoft-Windows-AppX-Deployment-Service-Privilege-Escalation.html
• http://packetstormsecurity.com/files/153009/Internet-Explorer-JavaScript-Privilege-Escalation.html
• http://packetstormsecurity.com/files/153114/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
• http://packetstormsecurity.com/files/153215/Microsoft-Windows-AppX-Deployment-Service-Local-Privilege-Escalation.html
• http://packetstormsecurity.com/files/153642/AppXSvc-Hard-Link-Privilege-Escalation.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0841
• https://www.exploit-db.com/exploits/46683/
• https://www.zerodayinitiative.com/advisories/ZDI-19-360/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0841
• Repository example: https://github.com/S3cur3Th1sSh1t/WinPwn
• Repository example: https://github.com/GhostTroops/TOP
• Repository example: https://github.com/Ostorlab/KEV
• Repository example: https://github.com/CVEDB/awesome-cve-repo
• Repository example: https://github.com/CVEDB/top

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