Windows Security
The latest Windows Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft’s July Patch Slams Door on ReFS Bug That Gives Attackers Full System Control
Microsoft on July 14, 2026, fixed a local privilege-escalation vulnerability in the Windows Resilient File System (ReFS) that could let a low-privileged user completely own an unpatched machine....
CVE-2026-50323: Microsoft’s July 2026 Update Fixes a Privilege Escalation Flaw in Windows 11 – Apply It Now
On July 14, 2026, Microsoft released a security patch that squashes a local privilege escalation vulnerability in Windows 11 and Windows Server 2025. Tracked as CVE-2026-50323, the flaw could let an...
Windows July 14 Patches Fix AppX Deployment Vulnerability – Don’t Let Attackers Escalate Privileges
Microsoft’s July 14, 2026 security updates fix a local elevation-of-privilege flaw in the Windows AppX Deployment Service that could hand full system control to someone who already has a toehold on...
Stealthy Win32k Flaw Fixed in July 2026 Update—Here’s Why You Can’t Skip This Patch
Microsoft quietly closed a dangerous privilege-escalation hole in the Win32k subsystem as part of its July 14, 2026 Patch Tuesday. The vulnerability, tracked as CVE-2026-49805, could let an attacker...
Microsoft's July 2026 Update Fixes USB Print Driver Privilege Escalation: Here’s What You Need to Know
Microsoft’s July 14, 2026 Patch Tuesday release resolves an elevation-of-privilege vulnerability in the Windows USB Print Driver that could let a locally authenticated attacker gain SYSTEM-level...
July 2026 Windows Update Closes USB Print Driver Flaw That Could Hand Attackers System Control
Microsoft's July 2026 security update fixes a vulnerability in the Windows USB print driver that could allow an attacker already on a machine to escalate their privileges and take full control of the...
Windows July 2026 Patches Fix SMB Memory Leak That Could Leak Secrets
On July 14, 2026, Microsoft patched a vulnerability in the Windows Server Message Block (SMB) protocol that allows a low-privilege attacker to extract information from uninitialized memory. Tracked...
Microsoft Patches Spaceport.sys Privilege Escalation Flaw—All Windows Users Should Update Now
Microsoft fixed a local privilege escalation vulnerability in the Windows Spaceport.sys driver on July 14, 2026, as part of its monthly Patch Tuesday updates. The flaw, tracked as CVE-2026-50333,...
Microsoft's July Patches Fix Windows Kernel Vulnerability That Leaks Sensitive Data to Local Attackers
Microsoft shipped security updates on July 14, 2026, that close a kernel information-disclosure hole tracked as CVE-2026-50294. The flaw lets an unprivileged local attacker read sensitive kernel...
That Windows Server Bug in July’s 570-Patch Update Can Give Attackers Full Control — Here’s What to Do
Microsoft fixed a high-severity privilege-escalation vulnerability on July 14 that lurks inside nearly every supported version of Windows Server and also affects modern Windows client releases. The...
Microsoft Patches NTFS Flaw That Could Allow Code Execution via Malicious Files — All Windows Versions Affected
Microsoft has patched a serious vulnerability in the Windows NTFS file system that could allow attackers to execute arbitrary code after a user opens a specially crafted file. The flaw, tracked as...
Windows LSASS Attack Can Force Server Reboots—July Patch Blocks It
Microsoft’s July 2026 security updates close a network-based denial-of-service vulnerability in the Windows Local Security Authority Subsystem Service (LSASS) that allowed an authenticated attacker...