Windows Kernel Security
The latest Windows Kernel Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2026-45653: Microsoft Patches Important Windows Kernel Elevation-of-Privilege Flaw in June 2026 Patch Tuesday
Microsoft’s June 9, 2026 security update addresses CVE-2026-45653, a Windows kernel elevation-of-privilege vulnerability that could allow an attacker to gain SYSTEM-level access on a compromised...
CVE-2026-45600: Microsoft Patches Important Windows Kernel Privilege Escalation Flaw in June 2026 Patch Tuesday
Microsoft’s June 2026 security update, released on the 9th as part of its regular Patch Tuesday cycle, addresses a local privilege escalation vulnerability tracked as CVE-2026-45600. The flaw,...
CVE-2026-34335 AFD.sys: How Microsoft's Patch Confidence Aids Enterprise Prioritization
Microsoft has disclosed a new elevation-of-privilege vulnerability in the Windows Ancillary Function Driver for WinSock (AFD.sys), tracked as CVE-2026-34335, in its latest Security Update Guide. The...
CVE-2026-33099: Critical AFD.sys Windows Kernel Privilege Escalation Vulnerability Demands Immediate Patching
Microsoft has confirmed a critical elevation-of-privilege vulnerability in the Windows Ancillary Function Driver for WinSock (AFD.sys) designated CVE-2026-33099. The company's security advisory...
CVE-2026-33104: Microsoft's High-Confidence Win32k EoP Vulnerability Demands Immediate Patching
Microsoft has flagged CVE-2026-33104 as a Win32k elevation of privilege vulnerability with a high confidence signal, triggering urgent patching requirements for Windows administrators. This...
CVE-2026-27922: Microsoft's High-Confidence AFD.sys Vulnerability Demands Immediate Patching
Microsoft's CVE-2026-27922 represents a critical local privilege escalation vulnerability in the Windows Ancillary Function Driver for WinSock (AFD.sys) that has earned the company's highest...
CVE-2026-32217: Windows Kernel Information Disclosure Vulnerability Exposes Local Log Data
Microsoft has documented a new Windows kernel vulnerability in its Security Update Guide, identified as CVE-2026-32217. The security flaw is classified as an information disclosure vulnerability...
CVE-2026-27908: Windows tdx.sys Kernel Vulnerability Poses Privilege Escalation Risk
Microsoft has published a security advisory for CVE-2026-27908, a critical elevation of privilege vulnerability in the Windows TDI Translation Driver (tdx.sys). This kernel-level flaw affects...
April 2026 Update Kills Cross-Signed Driver Trust for Windows 11 and Server 2025
Microsoft's April 2026 Windows update will permanently sever the chain of trust for cross-signed kernel drivers across multiple Windows versions. Starting with Windows 11 24H2, 25H2, 26H1, and...
Microsoft's 2026 Kernel Trust Change: Ending Legacy Cross-Signed Driver Support in Windows
Microsoft is preparing to implement one of the most significant Windows kernel trust changes in years, scheduled for April 2026. This security hardening measure will block legacy cross-signed drivers...