windows hyper-v

NatJack is a real and serious warning for administrators running shared NAT, but the evidence does not support treating every home router or every Windows PC as immediately exposed to session hijacking. The actionable part is narrower: Microsoft has patched a high-severity origin-validation flaw...

CVE-2026-50485 is a newly patched Windows Hyper-V vulnerability that lets an authorized attacker trigger a denial of service by exploiting a buffer over-read. Microsoft released the fix on July 14, 2026, as part of its monthly security updates, making patch deployment the immediate action for...

Microsoft has published CVE-2026-54127 under the title “Windows Hyper-V Elevation of Privilege Vulnerability,” but the provided facts do not yet establish affected products, severity, exploitation status, prerequisites, or a patch. Administrators should inventory systems with Hyper-V installed...

CVE-2026-54129 is a newly patched Windows Hyper-V elevation-of-privilege vulnerability that Microsoft rates Important, putting July’s security update on the priority list for administrators running Hyper-V hosts. Microsoft published the flaw on July 14, 2026, as part of its monthly security...

Oracle VirtualBox can run slowly on Windows 10 and Windows 11 when Microsoft’s Hyper-V hypervisor stack is enabled, because VirtualBox may fall back to using Windows virtualization interfaces instead of talking directly to the CPU’s hardware virtualization features. The fix is often simple, but...

Claude Desktop on Windows is reportedly keeping a Hyper-V-backed workspace alive after users touch Claude Cowork or agent mode, leaving a roughly 1.8GB Vmmem process in Task Manager even when they later reopen the app only for ordinary chat. The complaint, surfaced by Neowin and amplified...