Patch Tuesday updates for Windows 11 versions introduce improved previews for apps on the taskbar, a new Windows Studio Effects icon in the system tray area, and more.

CVE-2025-21391, the zero-day Windows storage flaw, stems from the way Windows resolves file paths and follows links, Walters said. File deletion is just the beginning of the problems it could cause, as it could lead to privilege escalation, unwanted access to security logs or configurations, malware injection, data manipulation, or other attacks.