Windows Security
The latest Windows Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2026-21510: Windows Shell Security Bypass Threat & Defender Protection Guide
Microsoft has quietly cataloged a significant security vulnerability in its latest security bulletins, with CVE-2026-21510 representing a Windows Shell security feature bypass that could potentially...
AFD.sys flaw lets attackers elevate to SYSTEM across multiple Windows builds, CVE-2026-21236.
Microsoft has disclosed a significant security vulnerability in the Windows operating system kernel that could allow attackers to gain elevated privileges on affected systems. Designated as...
CVE-2026-21242: Critical WSL Elevation-of-Privilege Vulnerability Patched by Microsoft
Microsoft has addressed a critical elevation-of-privilege vulnerability in the Windows Subsystem for Linux (WSL) tracked as CVE-2026-21242, which could allow attackers to gain SYSTEM-level privileges...
CVE-2026-21235: Windows Graphics EoP Vulnerability Analysis & Patch Guide
Microsoft has disclosed a critical elevation of privilege vulnerability in the Windows Graphics Component, designated CVE-2026-21235, that could allow attackers to gain SYSTEM-level privileges on...
CVE-2026-21517: Critical Windows App Installer EoP Vulnerability Explained
Microsoft has disclosed a significant security vulnerability, tracked as CVE-2026-21517, affecting the Windows App Installer components, specifically those targeting macOS applications. This local...
Windows Security Uplift: How Microsoft's Defender & Smart App Control Changes Protect Users
Microsoft has quietly moved a crucial piece of Windows' defensive plumbing into a more aggressive, easier-to-manage posture — shipping both refreshed Microsoft Defender security intelligence for...
Microsoft's 2026 Secure Boot Renewal: Windows 10 ESU Devices Risk Boot Failures
Microsoft and the PC industry have quietly opened a narrow but critical window to prevent a pre-OS security gap this year: Windows will start rolling replacement Secure Boot certificates into device...
Windows 11 Mandatory Code Signing & User Consent: Secure-by-Default Era Begins
Microsoft is fundamentally rethinking Windows security with its latest announcement of Windows Baseline Security Mode (BSM) and User Transparency and Consent (UTC) framework, marking the company's...
Windows Baseline Security Mode: Microsoft's New 'Secure by Default' Approach Explained
Microsoft is fundamentally rethinking Windows security with a new approach that aims to resolve one of the platform's longest-standing tensions: how to make Windows secure by default while preserving...
Fleet-wide Secure Boot certificate swap: IT verification and enrollment guide for the 2023 CA transition
Microsoft's upcoming Secure Boot certificate rotation represents one of the most significant security infrastructure changes for Windows devices in recent years, requiring IT administrators to verify...
Windows 11 Smart App Control Blocks ASUS Armoury Crate on ROG Ally: Security vs Functionality
Windows 11's Smart App Control (SAC) feature is creating significant disruption for ASUS ROG Ally handheld gaming PC owners by blocking the essential Armoury Crate software suite. This...
Mitsubishi FREQSHIP-mini Flaw Gives Attackers SYSTEM Access in Critical Infrastructure
A critical local privilege escalation vulnerability has been discovered in Mitsubishi Electric's FREQSHIP-mini software for Windows, designated CVE-2025-10314, posing significant risks to industrial...