EUVD-2026-72963
GHSA-5j63-6333-49v8
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local access and low privileges required; AC:H reflects race-condition UAF exploitation; full C/I/A impact consistent with kernel SYSTEM escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows USB Audio Class driver (usbaudio.sys) allows a local authenticated user to gain SYSTEM-level access via a use-after-free memory corruption condition. Affected versions span the entire supported Windows ecosystem from Server 2012 through Windows 11 26H1 and Windows Server 2025, making patch deployment at scale a significant operational task. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local, authenticated session with at least standard user privileges (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.0 with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately captures the threat profile: local access and low privileges are required, and AC:H indicates exploitation is not trivial, likely requiring precise timing to win a race condition or craft specific USB device state. … 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 addressing CVE-2026-69413 via Windows Update or WSUS, targeting the build numbers specified above for each affected OS version (e.g., Windows 11 24H2 to build 10.0.26100.9445 or later). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server (2012, 2016, 2019, 2022, 2025) and Windows client (10, 11) systems to determine exposure scope and prioritize critical systems. …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
View allShare
External POC / Exploit Code
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