hyper-v

Microsoft’s September 2025 Patch Tuesday delivers a heavy, operationally important security payload: this cycle addresses roughly 80 CVEs across Windows, Office, Azure, Hyper‑V and related components, including several critical remote‑code‑execution (RCE) and elevation‑of‑privilege (EoP) flaws...

Microsoft’s September 2025 Patch Tuesday shipped a wide-ranging set of fixes addressing 80 CVEs across Windows, Office, virtualization, and platform components — with eight rated Critical and 72 rated Important — and included several high-profile fixes for SMB, NTLM, NTFS, Office, SharePoint...

Microsoft’s September Patch Tuesday arrived with a broad set of fixes and a matching set of detection updates from Cisco Talos — including a new Snort ruleset — aimed at the most likely-to-be-exploited flaws this month. The update package contains dozens of CVEs spanning Windows core components...

Microsoft’s advisory for CVE-2025-55224 describes a concurrency flaw in the Windows kernel graphics component (Win32K — GRFX) that can be manipulated by an authorized local actor to gain code execution or elevate privileges on an affected system; the bug is a race condition (improper...

Microsoft’s terse advisory that “concurrent execution using a shared resource with improper synchronization (‘race condition’) in Windows Hyper‑V allows an authorized attacker to elevate privileges locally” is the single-line summary administrators need to treat as urgent: this is a Hyper‑V race...

Microsoft released a hotpatch—KB5065474—on September 9, 2025, for Windows 11 Enterprise LTSC 2024 that updates eligible devices to OS Build 26100.6508 and delivers targeted security and quality fixes while calling attention to an important Secure Boot certificate expiration window and a specific...

Microsoft’s Security Response Guide lists CVE-2025-54112 as a vulnerability in the Microsoft Virtual Hard Disk (VHD/VHDX) handling code that can be abused by an authorized local attacker to achieve elevation of privilege on Windows hosts, a condition vendors and incident responders classify as...

Microsoft’s Security Update Guide lists CVE-2025-54098 as an Improper access control vulnerability in Windows Hyper‑V that allows an authorized attacker to elevate privileges locally, a condition that requires immediate attention from anyone running Hyper‑V hosts, management servers, or...

CVE-2025-54091 — Windows Hyper‑V integer overflow / wraparound (local elevation of privilege) Summary (one‑line) An integer overflow or wraparound in a Windows Hyper‑V component can be triggered by an authorized local actor and may lead to local elevation of privilege (EoP) on the Hyper‑V host...

Microsoft’s Security Update Guide lists CVE-2025-54092 as a privilege‑escalation vulnerability in Windows Hyper‑V: the issue is described as a concurrent execution using a shared resource with improper synchronization (a race condition) that an authorized local attacker could leverage to elevate...

Microsoft has published an advisory for CVE-2025-54110, a Windows Kernel vulnerability caused by an integer overflow or wraparound that can be triggered by a locally authorized attacker to achieve elevation of privilege to SYSTEM on affected machines; administrators should treat this as a...

Microsoft’s Security Update Guide entry for CVE-2025-49734 describes an improper restriction of a communication channel in Windows PowerShell—a flaw in the PowerShell Direct pathway that can let an authorized local attacker elevate privileges on an affected host if the required conditions are...

I am using Hyper-V in Windows 11 Pro. I have very little experience with Hyper-V and VMs, so treat me like I'm a 7-year-old. I've been using a USB drive in a virtual machine. I've been following the operation where I start the VM, open disk management on the host machine, take the USB drive...

Azure Arc gives Hyper‑V administrators a new, cloud‑centric management plane that complements — not replaces — established tools like System Center Virtual Machine Manager (SCVMM), Windows Admin Center (WAC), Hyper‑V Manager and PowerShell, and this guide walks through practical onboarding...

Booting Windows Server 2019 into Safe Mode is one of the simplest — and most powerful — recovery moves an administrator can make, and it’s essential knowledge for troubleshooting boot failures, driver conflicts, malware, or service-level corruption. Multiple, supported paths exist (System...

If you’re thinking about escaping Windows 11’s telemetry creep or simply want to test a modern Linux desktop without committing, installing Linux alongside Windows — or replacing it entirely — remains the most practical option for most users. This guide walks a careful, practical path through...

Microsoft has quietly rolled out a public preview of a new VM Conversion tool inside Windows Admin Center that aims to make VMware to Hyper‑V migration straightforward, agentless, and low‑risk for organizations of all sizes. The extension promises quick setup (Microsoft says you can begin...

BeyondTrust’s release of the 2023 Microsoft Vulnerabilities Report — framed as the 10th‑anniversary edition — is both a retrospective and a warning: the last decade of Microsoft vulnerability disclosures has delivered recurring patterns that disproportionately affect Windows Server environments...

Microsoft has quietly released a first‑party, agentless VM Conversion extension for Windows Admin Center that converts VMware vCenter/ESXi virtual machines into Hyper‑V VMs on Windows Server — a move that promises a low‑friction on‑premises path away from VMware while surfacing important...

Microsoft has opened public preview of a long‑requested, first‑party VM Conversion extension inside Windows Admin Center, giving administrators a built‑in, agentless way to convert and migrate virtual machines from VMware vCenter/ESXi to Hyper‑V with minimal downtime and streamlined tooling. The...