EUVD-2026-73073
GHSA-x8mr-294m-w9pv
Severity by source
AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Local-only UAF requiring high privileges and complex heap manipulation; scope change reflects vTPM boundary crossing to full host impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Virtual Trusted Platform Module allows an authorized attacker to elevate privileges locally.
AnalysisAI
Use-after-free (CWE-416) in the Windows Virtual Trusted Platform Module enables a locally authenticated, high-privileged attacker to escalate privileges across a security boundary on affected Windows 10, 11, and Server editions. The CVSS scope-change metric (S:C) confirms exploitation breaks out of the vTPM trust boundary, yielding complete confidentiality, integrity, and availability impact on the broader host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVE description explicitly requires an 'authorized attacker,' confirmed by PR:H in the CVSS vector - the attacker must already hold a high-privilege local account on the target system. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.5 is calibrated appropriately given the significant prerequisites: AV:L (local execution required), AC:H (high complexity for reliable UAF exploitation against modern Windows heap hardening), and PR:H (existing high-privilege account on the target host). … 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 Windows security updates via Windows Update or WSUS/SCCM to reach the patched builds. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and catalog all Windows 10, 11, and Server systems with virtual trusted platform module enabled, prioritizing systems used by administrators and those implementing vTPM-based security policies. …
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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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