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Windows Storage VSP Driver Elevation of Privilege Vulnerability

IdentifiersCVE-2025-59517CWE-284· Improper Access Control

CVE-2025-59517 is an elevation-of-privilege vulnerability in the Windows Storage VSP Driver caused by improper access control. The available source material states that an authorized attacker can exploit the flaw locally to elevate privileges. Public context identifies it as part of Microsoft’s December 2025 security updates and notes that Microsoft assessed it as more likely to be exploited. No further technical detail about the specific vulnerable function, code path, or triggering mechanism is provided in the supplied content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows a local authorized attacker to gain elevated privileges on the affected Windows system. In practical terms, this can enable escalation from a lower-privileged account or execution context to a more privileged one, potentially facilitating full host compromise, follow-on credential theft, defense evasion, persistence, or use in exploit chains after initial access.

Mitigation

If you can’t patch tonight, do this now.

No specific vendor mitigation for CVE-2025-59517 is provided in the supplied content. In the absence of a patch, reduce exposure by limiting local attacker footholds and privilege-escalation opportunities: enforce least privilege, restrict interactive logon and code execution for untrusted users, harden application control, and monitor for suspicious local activity involving kernel/driver exploitation. These are general mitigations; specific mitigation guidance is currently not available from the provided material.

Remediation

Patch, then assume compromise.

Apply Microsoft’s December 2025 security updates that address CVE-2025-59517 for affected Windows versions. The provided content does not include product-specific KB mappings for this CVE, so the authoritative remediation is to deploy the relevant cumulative/security update from Microsoft for systems running the Windows Storage VSP Driver.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationWindows 10 1607operating_system
Microsoft CorporationWindows 10 1809operating_system
Microsoft CorporationWindows 10 21h2operating_system
Microsoft CorporationWindows 10 22h2operating_system
Microsoft CorporationWindows 11 23h2operating_system
Microsoft CorporationWindows 11 24h2operating_system
Microsoft CorporationWindows 11 25h2operating_system
Microsoft CorporationWindows Server 2016operating_system
Microsoft CorporationWindows Server 2019operating_system
Microsoft CorporationWindows Server 2022operating_system
Microsoft CorporationWindows Server 2022 23h2operating_system
Microsoft CorporationWindows Server 2025operating_system
Microsoft CorporationWindows Server 23h2operating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures1

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3

Community discussion across Reddit, Mastodon, and other social sources.