EUVD-2026-73495
GHSA-2xfg-jwcf-r6w3
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local kernel driver UAF requires low-privilege local access (AV:L, PR:L); heap exploitation complexity and probable race conditions justify AC:H; ring-0 compromise yields full C:H/I:H/A:H with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows USB Video Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in the Windows USB Video Driver (Windows 11 24H2/25H2/26H1 and Windows Server 2025) is enabled by a use-after-free memory corruption flaw in a kernel-mode driver component. A local attacker holding a standard user account can exploit the UAF condition to achieve ring-0 code execution, yielding complete confidentiality, integrity, and availability compromise of the affected system. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local Windows account with at least standard user (low) privileges on an affected Windows 11 or Windows Server 2025 build; no network access is needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.0 with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately reflects a local privilege escalation requiring low privileges and high attack complexity - characteristic of kernel UAF exploitation, which demands precise heap shaping or race-condition timing. … 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 Microsoft security update raising builds to or above the fixed thresholds: Windows 11 24H2 to build 10.0.26100.9445 or later, Windows 11 25H2 to build 10.0.26200.9445 or later, Windows 11 26H1 to build 10.0.28000.2954 or later, and Windows Server 2025 (including Server Core) to build 10.0.26100.33438 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Windows 11 systems running versions 24H2, 25H2, or 26H1, and all Windows Server 2025 deployments; flag domain-joined workstations and servers for priority patching. …
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today