EUVD-2026-73238
GHSA-g66j-q99m-q5f6
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only race condition (AV:L/AC:H) requires a standard user account (PR:L); post-escalation impact is total system compromise (C:H/I:H/A:H).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
5DescriptionCVE.org
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows TCP/IP stack exploits a race condition (CWE-362) to allow a low-privileged local user to gain full system-level control across virtually every supported Windows release. The vulnerability spans Windows 10 through Windows 11 25H2 and Windows Server 2012 through Server 2025, making the breadth of exposure exceptionally wide. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local, authenticated user account on the target Windows system - any standard user suffices; no administrative rights are needed prior to exploitation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H correctly captures the dual constraint of this vulnerability: exploitation is local-only and requires winning a timing race (AC:H), which lowers the practically achievable exploitation rate relative to a trivial network-reachable bug. … 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 Microsoft's cumulative security updates to reach or exceed the fixed build numbers enumerated above for each Windows version in scope; updates are distributed through Windows Update, WSUS, and Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, create an inventory of all Windows 10, Windows 11, and Windows Server 2012-2025 systems and identify those critical to business operations or holding sensitive data; immediately prioritize patch deployment to domain controllers and privileged-access workstations. …
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Same weakness CWE-362 – Race Condition
View allSame technique Privilege Escalation
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External POC / Exploit Code
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