securityupdateguide

Microsoft’s September 9, 2025 Patchday brought a dense, operationally important set of fixes for Microsoft Office alongside a much larger ecosystem update—roughly eighty CVEs across Windows, Office, Azure and related components—forcing administrators to treat this month’s release as more than...

Microsoft’s Security Response Guide lists CVE-2025-54112 as a vulnerability in the Microsoft Virtual Hard Disk (VHD/VHDX) handling code that can be abused by an authorized local attacker to achieve elevation of privilege on Windows hosts, a condition vendors and incident responders classify as...

Microsoft’s Security Update Guide lists CVE-2025-55243 as a spoofing vulnerability in Microsoft OfficePlus that can lead to the exposure of sensitive information and enable an attacker to perform spoofing over a network, but key public mirrors and automated scrapers offer limited or inconsistent...

Microsoft’s security portal lists CVE-2025-55228 as a Windows Graphics Component issue in the Win32K — GRFX code path that can be abused by an authenticated local actor through a concurrency/race condition; the flaw is described as allowing execution of attacker-supplied code in kernel context...

Microsoft’s security advisory for CVE-2025-54919 describes a race‑condition flaw in the Windows Win32K graphics subsystem (GRFX) that can be abused by an authenticated local user to execute code in a privileged context; defenders should treat affected hosts as high priority for immediate...

A newly disclosed memory-corruption flaw in Microsoft Word—tracked as CVE-2025-53784—has been classified as a use-after-free vulnerability that can allow an attacker to execute code locally when a victim opens or previews a specially crafted document. Microsoft’s Security Update Guide lists this...