Security Alerts
The latest Security Alerts coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2026-40414: Microsoft Fixes Important TCP/IP Null Pointer DoS Flaw in May 2026 Patch Tuesday
Microsoft's May 2026 Patch Tuesday landed with a notable fix for CVE-2026-40414, an Important-rated denial-of-service vulnerability in the Windows TCP/IP stack. The flaw, caused by a NULL pointer...
CVE-2026-40410: Critical Windows SMB Client Use-After-Free Privilege Escalation Flaw Patched
Microsoft has released an emergency security update to address a newly discovered elevation-of-privilege vulnerability in the Windows SMB Client, tracked as CVE-2026-40410. Rated Important with a...
Windows WAN ARP Driver Use-After-Free Flaw Grants SYSTEM Access
Microsoft disclosed CVE-2026-40408 on May 12, 2026, as part of its monthly Patch Tuesday security updates. This Important-rated elevation-of-privilege vulnerability resides in the Windows WAN ARP...
Windows CLFS Zero-Day Gets Critical Patch: May 2026 Tuesday Fix Now Live
Microsoft's May 2026 Patch Tuesday brought a fix for CVE-2026-40407, a local privilege escalation vulnerability in the Windows Common Log File System (CLFS) driver. The flaw, rated Important, allows...
Patch now: Windows 11 and Server 2025 crash risk from single TCP/IP packet
Microsoft’s May 2026 Patch Tuesday brought a fix for a critical denial-of-service vulnerability in the Windows TCP/IP stack that could allow unauthenticated attackers to crash affected systems with...
CVE-2026-40406 Windows TCP/IP Leak: Patch Now Despite Sparse Details
Microsoft's Security Response Center (MSRC) dropped a brief advisory on May 12, 2026, for CVE-2026-40406, an information disclosure vulnerability buried in the Windows TCP/IP stack. Details are...
Patch Now: CVE-2026-40399 Windows TCP/IP Flaw Grants SYSTEM Access
Microsoft’s May 2026 Patch Tuesday release includes a fix for CVE-2026-40399, a local elevation-of-privilege vulnerability in the Windows TCP/IP stack rated Important with a CVSS 3.1 score of 7.8....
CVE-2026-40380: Critical Windows Volume Manager RCE Vulnerability Patched in May 2026 Update
Microsoft shipped a critical security fix for CVE-2026-40380 in its May 2026 Patch Tuesday release, closing a remote code execution vulnerability in the Windows Volume Manager Extension Driver. The...
Patch Now: CVE-2026-40377 CryptoAPI EoP Hits Windows CryptSvc
Microsoft has published CVE-2026-40377, a critical elevation-of-privilege vulnerability in Windows Cryptographic Services, in its Security Update Guide on May 12, 2026. The advisory includes a new...
CVE-2026-40374: Microsoft Patches Power Automate Desktop Information Disclosure Bug
Microsoft has published a new security advisory for a confirmed information disclosure vulnerability in Power Automate Desktop, tracked as CVE-2026-40374. The announcement came via the company’s...
Microsoft Urges Immediate SharePoint Patching for CVE-2026-40368 RCE Threat
Microsoft’s July 2026 Patch Tuesday brought 83 security fixes, but one entry in the Security Update Guide is already ringing alarm bells for IT administrators worldwide. CVE-2026-40368—a remote...
CVE-2026-40366: No-Click Word RCE via Preview Pane—Patch Now
Microsoft’s May 12, 2026 security update addresses CVE-2026-40366, a Critical remote code execution (RCE) vulnerability in Microsoft Word. The flaw, rated Critical, stems from a use-after-free bug...