June 9, 2026—Baseline
Applies To
Baseline Month
Note:Â The June 2026 Windows security update is delivered as a baseline update instead of a hotpatch update to help protect devices as quickly as possible after the public disclosure of a security vulnerability outside the typical coordinated disclosure best practices (CVE-2026-45585). Devices require a restart to complete installation.
The June 2026 security baseline will be available starting June 9, 2026. For more information, see KB5094126.Â
To learn more about release cadence, see the release notes for Hotpatch on Windows 11 Enterprise, version 25H2Â and version 24H2.
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