Sysmon

Winsage
March 11, 2026
Microsoft has released the March 2026 Patch Tuesday update, KB5079473, for all supported versions of Windows 11 (25H2 and 24H2). Key changes include: - A Network Speed Test Tool in the Taskbar for measuring Ethernet, Wi-Fi, and cellular performance. - New pan and tilt options for supported cameras in the Settings menu. - Built-in System Monitor (Sysmon) available as an optional feature; users should uninstall previous versions before enabling it. - Remote Server Administration Tools (RSAT) support for Windows 11 Arm64 devices. - Quick Machine Recovery tool enabled for Windows Professional devices not domain-joined or enrolled in enterprise management. - Ability to use .webp image files for desktop backgrounds. - Introduction of new emojis from Emoji 16.0, including a face with bags under the eyes and a fingerprint. - BitLocker improvements for device responsiveness after entering a recovery key. - Enhanced reliability of search functions in File Explorer. Additionally, Microsoft is publishing patch notes for the upcoming version 26H1, which is currently available to Windows Insiders on the Canary Channel but not yet public. The KB5079466 patch for version 26H1 includes features already seen in earlier Windows 11 versions.
Winsage
March 4, 2026
A proof-of-concept exploit for CVE-2026-20817, a local privilege escalation vulnerability in the Windows Error Reporting (WER) service, has been released by security researcher oxfemale on GitHub. This vulnerability allows low-privileged users to gain SYSTEM-level access through crafted Advanced Local Procedure Call (ALPC) messages. The flaw is located in the WER service's SvcElevatedLaunch method, which fails to validate caller privileges before executing WerFault.exe with user-supplied command line parameters. The CVSS v3.1 base score for this vulnerability is 7.8, indicating a high severity level. It affects unpatched versions of Windows 10, Windows 11, Windows Server 2019, and Windows Server 2022 prior to the January 2026 update. Demonstrations have shown successful exploitation on Windows 11 23H2. Security teams are advised to monitor for unusual processes related to WerFault.exe, investigate missing SeTcbPrivilege in SYSTEM tokens, and review WER-related activities from low-privilege users. Immediate application of the January 2026 security patches is recommended, and a temporary workaround involves disabling the WER service.
Winsage
February 26, 2026
Windows Update KB5077241, released in February 2026, is a 4.5GB feature update for the 24H2 and 25H2 versions. It poses significant performance risks for older hardware, particularly laptops and desktops without a Neural Processing Unit (NPU). Users with outdated Nvidia graphics cards, specifically the 900 Series (Maxwell) and 1000 Series (Pascal), report issues such as game stuttering, screen flickering, and system boot failures. The update also contains a flaw that inaccurately displays CPU usage in Task Manager, showing 0% utilization even under load. Many users face installation issues, encountering Error 0x800F0983, requiring them to delete update cache files and run repair tools. The update introduces features like a Taskbar Speed Test, Sysmon Security, improved Sleep/Wake functionality, and WebP wallpaper support, but many remain locked. Users can enable these features using ViVeTool with specific commands. Overall, the update is advised against for those with older Nvidia GPUs due to potential conflicts and performance issues.
Winsage
February 25, 2026
Microsoft has released optional February updates for Windows 11 versions 25H2 and 24H2, which include several enhancements: - A network speed test tool accessible from the taskbar for measuring Ethernet, Wi-Fi, and cellular connections. - Enhanced camera settings with new pan and tilt options for supported cameras. - A built-in version of the System Monitor (Sysmon) tool, available as an optional feature. - Improvements to Remote Server Administration Tools (RSAT) for Windows 11 Arm64 devices. - A new automatic recovery tool for Windows 11 Professional devices not domain-joined. - Support for .webp images as desktop backgrounds. - Introduction of new emojis in the Emoji 16.0 release. - BitLocker improvements to prevent devices from becoming unresponsive after entering a recovery key. Additionally, Microsoft has shared release notes for an upcoming optional update for Windows 11 version 26H1, which is currently only available to Insiders on the Canary Channel and is expected to debut on new devices with advanced silicon.
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