CVE-2018-0821: Microsoft Windows 10

High severity, CVSS 7.0. EPSS: 2.3% chance of exploitation in the next 30 days.

AppContainer in Windows 10 Gold, 1511, 1607, 1703 and 1709, Windows Server 2016 and Windows Server, version 1709 allows an elevation of privilege vulnerability due to the way constrained impersonations are handled, aka "Windows AppContainer Elevation Of Privilege Vulnerability".

Affected products

• Microsoft Windows 10: affected versions not specified; version 1511 only; version 1607 only; version 1703 only; version 1709 only
• Microsoft Windows Server 2016: affected versions not specified; version 1709 only

Published 2018-02-15. Last modified 2026-06-17.