CVE-2019-1253: Microsoft Windows AppX Deployment Server Privilege Escalation Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-03-15. EPSS: 11.6% chance of exploitation in the next 30 days.

An elevation of privilege vulnerability exists when the Windows AppX Deployment Server improperly handles junctions.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1215, CVE-2019-1278, CVE-2019-1303.

Affected products

• Microsoft Windows 10 1703: affected versions not specified
• Microsoft Windows 10 1709: affected versions not specified
• Microsoft Windows 10 1803: affected versions not specified
• Microsoft Windows 10 1809: affected versions not specified
• Microsoft Windows 10 1903: affected versions not specified
• Microsoft Windows Server 1803: affected versions not specified
• Microsoft Windows Server 1903: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-09-11. Last modified 2026-06-17.