EUVD-2026-72989
GHSA-cppg-8qmf-5q88
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access with low privileges required; AC:H reflects race-condition UAF; no scope change; full C/I/A post-escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in the Windows Kernel via a use-after-free memory corruption flaw allows an authenticated local attacker to elevate from low-privileged user to SYSTEM-level access. The vulnerability spans the entire current Windows ecosystem - from legacy Windows Server 2012 through Windows 11 26H1 and Windows Server 2025 - making it broadly relevant to enterprise patch management. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local session with at least low-level user privileges (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately captures the risk profile: local access is required, but successful exploitation yields full kernel-level compromise (C:H/I:H/A:H). … 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 vendor-released Microsoft security update, available via Windows Update and WSUS, targeting the fixed build numbers enumerated in the affected-versions data (e.g., Windows 11 24H2/25H2 to 10.0.26100.9445 or later, Windows Server 2025 to 10.0.26100.33438 or later, Windows Server 2022 to 10.0.20348.5622 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit your Windows infrastructure to identify all affected systems spanning Server 2012 through current versions and determine patch deployment windows to avoid business disruption. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allShare
External POC / Exploit Code
Leaving vuln.today