EUVD-2026-44306
GHSA-4rh4-3695-hmxr
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local authenticated user (AV:L/PR:L) exploiting a use-after-free race (AC:H) with no UI, yielding full SYSTEM-level compromise (C:H/I:H/A:H) within an unchanged scope.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Use after free in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Microsoft Windows Sensor Data Service arises from a use-after-free (CWE-416) memory corruption flaw that an already-authenticated attacker can trigger to run code at higher privilege. It affects a broad range of client and server builds (Windows 10 1607 through Windows 11 26H1, and Windows Server 2016 through 2025). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already be a locally authenticated, low-privileged user on the target host (CVSS PR:L, AV:L) with the ability to execute code that interacts with the Sensor Data Service; it cannot be performed remotely or unauthenticated. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS:3.1 vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H yields 7.0 (High) and is internally consistent for a local elevation-of-privilege bug: exploitation requires local access (AV:L), some existing privileges (PR:L, an authorized/authenticated user), no user interaction, and a high-complexity condition (AC:H) that typically reflects the race window inherent to use-after-free exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who already has a low-privileged foothold on a Windows host - for example, a standard user account obtained via phishing or a compromised service - runs a crafted local program that repeatedly interacts with the Sensor Data Service to trigger the use-after-free and win the timing race (AC:H). By grooming the heap to reoccupy the freed object, the attacker corrupts memory to execute code in the service's privileged context and elevate to SYSTEM. … |
| Remediation | Apply the Microsoft security update for CVE-2026-58619 (Patch available per vendor advisory) via Windows Update or WSUS/SCCM/Intune; identify the exact KB and fixed build for each affected SKU from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58619, as specific fix version numbers are not provided in the input data and should not be invented. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory Windows 10, 11, and Windows Server 2016-2025 systems to assess deployment scope and verify patch deployment infrastructure readiness. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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