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CVE-2025-59517 is a local elevation-of-privilege vulnerability in the Windows Storage VSP Driver component, specifically in storvsp.sys within the VspVsmbFileCreate() function used by Virtual Server Message Block (vSMB) operations. The flaw is caused by improper access control during file creation on a vSMB share path. The driver impersonates the calling thread before opening the underlying filesystem object, but invokes the kernel file-opening routine without the flag required to force normal access checks. As a result, the Object Manager opens the target path with kernel privileges rather than enforcing the caller’s NTFS permissions. This allows a low-privileged local user to obtain a vSMB share handle to directories that should be inaccessible, including highly privileged system locations. The issue affects systems where the Storage VSP functionality is present and exposed through the Virtual Machine Platform feature.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local privilege escalation vulnerability in Microsoft Windows storvsp.sys (vSMB handling) caused by improper access control and missing OBJ_FORCE_ACCESS_CHECK during IoCreateFileEx(), allowing low-privileged users to obtain privileged vSMB share handles to arbitrary directories.
A local privilege escalation vulnerability in the Windows Storage VSP Driver due to improper access control. Exploitation is considered more likely.
A vulnerability in the Storage VSP driver, details unspecified but likely privilege escalation or code execution.
Windows Storage VSP Driver local elevation of privilege vulnerability (noted as more likely to be exploited).
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.