… The system, codenamed MDASH, found 16 security flaws in Windows before any attacker could get to them, including four critical remote code execution bugs that could have handed unauthenticated attackers a straight line into enterprise networks. …
… Security researcher Will Dormann of Tharros independently verified the results. A bug that was supposed to be fixed in 2020 The flaw sits in the Windows Cloud Filter driver, cldflt.sys, specifically in a routine called HsmOsBlockPlaceholderAccess. The bug is not new. …
… Why Microsoft blocked it Microsoft's official statement frames the change as intentional security hardening, not a bug. …
… The display text is a known cosmetic bug under investigation. …
… Windows 11 24H2 loses all security updates, bug fixes, and time zone updates on October 13, 2026, leaving machines on that version exposed to unpatched vulnerabilities going forward. …