CVE-2019-0841

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.

Score

CVSS 3.1 7.8 High

Status

Analyzed - secure@microsoft.com

Published

2019-04-09

Last modified

2025-10-21

Known exploited (CISA KEV)

since 2022-03-15, action due 2022-04-05: Apply updates per vendor instructions.

Weaknesses

CWE-59

Affected products

• Windows (Microsoft)
• Windows 10 1703 (Microsoft)
• Windows 10 1709 (Microsoft)
• Windows 10 1803 (Microsoft)
• Windows 10 1809 (Microsoft)
• Windows Server (Microsoft)
• Windows Server 2016 (Microsoft)
• Windows Server 2019 (Microsoft)

References

• 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