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Microsoft disclosed and patched CVE-2025-59517, an elevation of privilege vulnerability in the Windows Storage VSP Driver. The issue was published through Microsoft's Security Update Guide, which identifies the affected component as a Windows storage virtualization driver and classifies the flaw as enabling privilege escalation on impacted systems.
Microsoft released the advisory through both its product advisory and Security Update Guide channels, but did not provide a public synopsis with additional technical details in the referenced notices. Organizations using Windows systems should review the vendor guidance for CVE-2025-59517, determine exposure across affected assets, and apply the relevant security updates as part of routine patch management.
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Microsoft added CVE-2025-59517, a Windows Storage VSP Driver Elevation of Privilege vulnerability, to its Security Update Guide. The two references describe the same advisory publication event.
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Microsoft has published security advisories for **CVE-2026-40402**, a **Windows Hyper-V Elevation of Privilege** vulnerability listed in the Microsoft Security Update Guide. The flaw affects Hyper-V, Microsoft's virtualization platform, and could allow an attacker to gain elevated privileges on a vulnerable system. The advisory was released through Microsoft's public update channels, including the Security Update Guide and MSRC advisory pages, but no public synopsis or technical details were provided in the referenced notices. Organizations using **Windows Hyper-V** should review Microsoft's guidance for affected versions, patch availability, and any mitigation steps tied to `CVE-2026-40402`.
Jul 12, 2026
Microsoft published security updates for several Windows elevation of privilege vulnerabilities affecting core components, including **Windows Storage Spaces Controller**, **Windows SMB Client**, and **Windows Speech Runtime**. The issues were tracked as `CVE-2026-27907`, `CVE-2025-32718`, and `CVE-2025-58715`, respectively, and all could allow attackers to gain higher privileges on affected systems after initial access. Among the disclosed flaws, Microsoft provided the most detail for `CVE-2026-27907`, describing it as an **integer underflow** issue (`CWE-191`) in Windows Storage Spaces Controller that could let a locally authenticated low-privileged attacker elevate privileges to **SYSTEM** without user interaction. Microsoft rated that vulnerability **Important** with a **CVSS 3.1 score of 7.8**, said it was not publicly disclosed or exploited at publication, assessed exploitation as less likely, and released an official fix as part of its security guidance.
Jun 29, 2026
Microsoft disclosed and patched several **Windows Hyper-V elevation of privilege vulnerabilities** tracked as `CVE-2022-21901`, `CVE-2023-36427`, `CVE-2024-43624`, and `CVE-2025-54098`. The advisories identify a recurring security issue affecting Hyper-V components, including one flaw specifically tied to **Hyper-V Shared Virtual Disk**, with each entry published through Microsoft's Security Update Guide and related advisory portals. The vulnerabilities could allow attackers to gain higher privileges on affected Windows systems running Hyper-V, increasing the risk to virtualized environments and hosts that rely on Microsoft's hypervisor stack. Organizations using Hyper-V should review the relevant Microsoft advisories, determine exposure across guest and host infrastructure, and prioritize deployment of the corresponding security updates to reduce the chance of privilege escalation in enterprise virtualization deployments.
Jul 12, 2026