EUVD-2026-44310
GHSA-4rwg-8m37-cjcc
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local low-privileged code execution (AV:L/PR:L) exploits a race-dependent use-after-free (AC:H), yielding full SYSTEM compromise (C:H/I:H/A:H) within the same host (S:U).
Primary rating from Vendor (microsoft).
CVSS VectorNVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Use after free in Windows DirectX allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows DirectX graphics subsystem allows an authenticated attacker with low privileges to elevate to SYSTEM by triggering a use-after-free (CWE-416) memory-corruption condition. The flaw affects a broad range of Windows client and server releases from Windows 10 1607 through Windows 11 26H1 and Windows Server 2012 through Server 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already have local access and low-privilege authenticated code execution on the target (CVSS PR:L, AV:L) - it cannot be triggered remotely or by an unauthenticated user, and no user interaction is needed (UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H, score 7.0) describes a local, authenticated attack requiring high complexity but yielding high confidentiality, integrity, and availability impact - consistent with a kernel privilege-escalation primitive. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has already gained a low-privileged foothold on a Windows host - for example through a phishing payload, a compromised service account, or an interactive session on a shared server - runs a crafted program that repeatedly exercises the vulnerable DirectX kernel path while grooming the heap to reuse the freed object. By winning the timing/reallocation condition (reflecting the CVSS AC:H rating), the attacker corrupts kernel memory to execute code as SYSTEM. … |
| Remediation | Patch available per vendor advisory - apply the Microsoft security update for CVE-2026-58629 through Windows Update or WSUS/Intune as the primary remediation; the exact patched build numbers per Windows release are listed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58629. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Windows 10 (version 1607 and later), Windows 11 (versions through 26H1), and Windows Server (2012-2025) systems in your inventory and categorize by business criticality; alert IT and security leadership to plan patching. …
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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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