Security Alerts
The latest Security Alerts coverage — news, analysis, and updates from the WindowsNews.AI desk.
Microsoft Patches Critical AFD.sys Zero-Day Allowing SYSTEM-Level Code Execution
Microsoft has issued a critical security advisory for CVE-2026-21238, a newly discovered elevation-of-privilege vulnerability in the Windows Ancillary Function Driver for WinSock (AFD, afd.sys). This...
CVE-2026-21241: Critical Windows AFD Kernel Vulnerability Demands Immediate Patching
Microsoft has issued an urgent security advisory for CVE-2026-21241, a critical elevation-of-privilege vulnerability in the Windows Ancillary Function Driver for WinSock (AFD, afd.sys) that could...
CVE-2026-21239: How Microsoft's New Confidence Signal is Transforming Windows Patch Management
Microsoft's introduction of a "confidence" indicator alongside CVE-2026-21239 represents a fundamental shift in how the company communicates vulnerability severity and drives enterprise security...
CVE-2026-21251: Critical Windows Failover Cluster Vulnerability Explained
Microsoft has disclosed a significant security vulnerability affecting Windows Server Failover Clusters, designated CVE-2026-21251, which presents a critical elevation-of-privilege risk in enterprise...
CVE-2026-21253: Critical Windows Mailslot EoP Vulnerability - Patch Analysis & Mitigation Guide
Microsoft has disclosed a critical elevation of privilege vulnerability in the Windows Mailslot file system driver, designated CVE-2026-21253, which could allow attackers to gain SYSTEM-level...
CVE-2023-2804: The 12-bit JPEG Heap Overflow Threat in Windows & How to Patch
A critical vulnerability lurking in a rarely used JPEG feature has exposed millions of Windows systems and applications to potential remote code execution attacks. CVE-2023-2804, a heap-based buffer...
Critical Windows HTTP.sys Flaw CVE-2026-21250: Patch Analysis & Security Impact
Microsoft has issued an urgent security update addressing a critical elevation of privilege vulnerability in the Windows HTTP protocol stack, designated as CVE-2026-21250. This kernel-mode flaw in...