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Microsoft: KB5120998 Mouse Reset Bug Hits Only Non-English Windows 11 PCs
Microsoft has confirmed that a mouse personalization reset bug tied to the KB5120998 August 2026 preview update only affects non-English Windows 11 installations, after user reports flagged the issue on version 25H2 and 24H2 devices.
Microsoft confirms KB5120998 resets Windows 11 desktop settings
Microsoft has confirmed that the optional KB5120998 preview update stops some Windows 11 desktop settings from loading, leaving a solid black background that users cannot restore manually.
Microsoft Tells Users to Ignore False 'Antivirus Is Turned Off' Alerts
Microsoft has confirmed a known issue in which recent Microsoft Defender Antivirus updates trigger false "Microsoft Defender Antivirus is turned off" alerts in the Windows Security app, even though the antivirus is running normally. The bug affects all supported Windows client and server versions, including Windows 11 26H1 and Windows Server 2025, and a fix is still pending.
TerminalFix ClickFix Variant Deploys Reverse-Tunnel Backdoor via Fake Cloudflare CAPTCHAs
Microsoft has detailed TerminalFix, a ClickFix variant that lures victims via fake Cloudflare CAPTCHAs into running PowerShell commands in Windows Terminal, ultimately deploying a Python-based reverse-tunnel implant that gives attackers persistent network access.
Windows 11 KB5120998 Update Adds 35 Changes, Movable Taskbar
Microsoft released the optional Windows 11 KB5120998 preview update for versions 24H2 and 25H2, bringing 35 changes, including a repositionable taskbar, resizable Start menu, and the phased rollout of Administrator Protection.
Microsoft's August 2026 Patch Tuesday Fixes About 400 Flaws and 3 Zero-Days
Microsoft's August 2026 Patch Tuesday addresses roughly 400 vulnerabilities, including 42 rated Critical and three zero-days. One, CVE-2026-68820, is already exploited in the wild and now sits in CISA's KEV catalog.
CVE-2026-69550: Windows App for Mac Leaks Data via RDP Client Flaw
Microsoft disclosed CVE-2026-69550, an important-severity information disclosure flaw in the Remote Desktop Client used by Windows App for Mac. The out-of-bounds read bug lets an unauthorized network attacker access data, but Microsoft says exploitation is less likely and no active exploitation has been observed.
Microsoft Tests Faster Windows 11 File Explorer, Redesigned Context Menu
Microsoft has started testing a redesigned File Explorer and context menu in Windows 11 Insider preview builds, promising faster right-click performance, less clutter, and a new Settings page to control which commands and app extensions appear.
Microsoft Patches Dozen-Plus Flaws, Apple Fixes Screen Sharing Bug CVE-2026-65400
Microsoft patched more than a dozen vulnerabilities across Active Directory, Azure, Entra, SharePoint and Teams, including three CVSS 10/10 flaws. Apple fixed a single Screen Sharing authentication bypass (CVE-2026-65400) in macOS.
Windows Settings Backup to Be On by Default from Windows 11 26H2
Microsoft is turning Windows settings backup and restore on by default for eligible managed devices, making a recoverable list of settings and Microsoft Store apps a baseline part of the Windows experience rather than an opt-in step. The feature is in preview for Windows Insiders now and becomes generally available with Windows 11, version 26H2.
CISA Adds Actively Exploited SharePoint RCE CVE-2026-45659 to KEV Catalog
CISA added Microsoft SharePoint Server flaw CVE-2026-45659 (CVSS 8.8) to its Known Exploited Vulnerabilities catalog, citing active exploitation and setting a July 4, 2026 remediation deadline for U.S. federal agencies.
Microsoft Ships KB5095093 Preview Update to Fix Windows 11 Taskbar, Explorer and GPU Bugs
Microsoft released KB5095093, the June 23, 2026 optional preview cumulative update for Windows 11, advancing systems to OS Builds 26200.8737 and 26100.8737. The non-security update fixes eight reliability defects including taskbar input failures, File Explorer refresh bugs, DirectX rendering crashes and Bluetooth audio disconnects, but ships with three known installation issues.
Microsoft June 2026 Patch Tuesday: KB5093998 Fixes 7 Flaws in Windows 11 23H2 Including Actively Exploited Kernel Bug
Microsoft released KB5093998 on June 11, 2026, a security update for Windows 11 23H2 patching 7 CVEs including an actively exploited kernel privilege escalation and a DirectX graphics RCE flaw.
Microsoft June 2026 Patch Tuesday: KB5094127 Fixes Actively Exploited Kernel Flaw in Windows 10 22H2
Microsoft released KB5094127 on June 11, 2026, a security update for Windows 10 22H2 patching CVE-2026-0234 (kernel EoP), CVE-2026-0235 (RDP RCE), CVE-2026-0236 (graphics info disclosure), and CVE-2026-0237 (WebView2 bypass).
Microsoft Ships KB5094126 June 2026 Security Update for Windows 11 24H2 and 25H2
Microsoft released KB5094126 on June 9, 2026, a security update for Windows 11 versions 24H2 and 25H2 and Windows Server 2025. According to the update documentation, it fixes six vulnerabilities (CVE-2026-26001 through CVE-2026-26006) spanning the Windows Kernel, Edge WebView2, Graphics component, authentication, and Windows Shell, and raises builds to 26100.8655 (24H2) and 26200.8655 (25H2).
Microsoft Ships KB5094125 to Patch Five Windows Server 2025 Flaws
Microsoft's June 2026 security update KB5094125 patches five vulnerabilities in Windows Server 2025, including a critical unauthenticated Remote Desktop Services RCE (CVE-2026-0235) and a Hyper-V guest-to-host escape (CVE-2026-0237). The update raises the OS build to 26100.32995 and applies to all editions across full GUI and Server Core installations.
Microsoft Ships KB5094122 for Windows Server 2016 and Windows 10 1607, Patching Kernel and CLFS Flaws
Microsoft released KB5094122, the June 2026 cumulative security update for Windows 10 Version 1607 and Windows Server 2016, addressing critical remote code execution and privilege escalation vulnerabilities. The update moves the build to 14393.9234 and fixes flaws in the Windows Kernel, CLFS Driver, Graphics Component and Print Spooler.
Microsoft Ships KB5094041 June Rollup for Windows Server 2012 R2 ESU Systems
Microsoft released KB5094041 on June 9, 2026, the monthly rollup for Windows Server 2012 R2 ESU systems. It patches kernel security flaws, fixes TLS 1.3 compatibility, resolves WMI memory leaks, and improves AD replication stability.
Microsoft Ships KB5094128 for Windows Server 2022, Patching Four Critical Flaws
Microsoft's June 2026 security update KB5094128 patches multiple critical vulnerabilities in Windows Server 2022, including an unauthenticated NFS remote code execution flaw (CVE-2026-26001, CVSS 9.8), a Task Scheduler privilege escalation bug, an AD CS authentication bypass, and a Windows kernel memory corruption issue. The update raises the OS build to 20348.5256 and requires a restart.