EUVD-2026-73458
GHSA-457p-475f-76x6
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack requiring only a standard user account (PR:L); untrusted DLL load yields full SYSTEM control (C:H/I:H/A:H); no special configuration or interaction needed.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Untrusted search path in Windows Storage allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Storage affects virtually every supported Windows client and server release, allowing an authorized low-privilege local attacker to gain full SYSTEM-level control without any user interaction. The root cause is CWE-426 (Untrusted Search Path): the Storage component resolves a DLL or executable from a path the attacker can influence, causing elevated-privilege code to load attacker-controlled content. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have a valid local Windows user account (PR:L) with the ability to write a file to a directory included in the DLL search path used by the Windows Storage component; this is achievable by any standard (non-administrator) local or domain user on affected builds. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score is appropriate and well-calibrated: AV:L constrains exploitation to users with local access, but AC:L and PR:L mean any standard domain or local user account is sufficient, with no special configuration required and no interaction from a victim. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft-released security update via Windows Update or WSUS/MECM targeting the fixed build numbers published per-version: Windows Server 2016 and Windows 10 1607 should be updated to build 10.0.14393.9512 or later; Windows Server 2019, Windows 10 1809 to 10.0.17763.9245 or later; Windows 10 21H2 to 10.0.19044.7725 or later; Windows 10 22H2 to 10.0.19045.7725 or later; Windows Server 2022 to 10.0.20348.5622 or later; Windows 11 23H2 to 10.0.22631.7582 or later; Windows 11 24H2 and Server 2025 to 10.0.26100.9445/33438 or later; Windows 11 25H2 to 10.0.26200.9445 or later; and Windows 11 26H1 to 10.0.28000.2954 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, Server 2016, 2019, and 2022 systems and verify patch availability through Microsoft Update. …
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Same weakness CWE-426 – Untrusted Search Path
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External POC / Exploit Code
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