EUVD-2026-73578
GHSA-w85f-hpfr-ph9g
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only attack surface (AV:L), low complexity once driver accessible, low privilege sufficient (PR:L), no scope change; full C/I/A impact matches kernel-mode code execution.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows USB Audio Class driver (usbaudio.sys) allows a low-privileged authenticated user to gain full system control via an integer overflow. The flaw affects an exceptionally broad range of Windows releases, spanning Windows 10 1607 through Windows 11 26H1 and Windows Server 2012 through Server 2025. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have an authenticated local session on the target Windows system with at least standard user (low) privileges - remote unauthenticated exploitation is not possible per the AV:L/PR:L CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H accurately captures the threat profile: exploitation is local, requires only a standard user account, involves no user interaction, and yields complete compromise of confidentiality, integrity, and availability on the affected system. … 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 updates released for CVE-2026-69707, targeting the fixed build numbers per Windows version listed in the EUVD affected-versions data: Windows 11 24H2/25H2 to build 10.0.26100.9445 or later, Windows 11 23H2 to 10.0.22631.7582 or later, Windows 11 26H1 to 10.0.28000.2954 or later, Windows 10 22H2/21H2 to 10.0.19045.7725/10.0.19044.7725 or later, Windows 10 1809/Server 2019 to 10.0.17763.9245 or later, Windows 10 1607/Server 2016 to 10.0.14393.9512 or later, Server 2022 to 10.0.20348.5622 or later, Server 2025 to 10.0.26100.33438 or later, Server 2012 R2 to 6.3.9600.23397 or later, and Server 2012 to 6.2.9200.26349 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct an inventory of all Windows 10 (versions 1607 through 26H1), Windows 11, and Windows Server 2012-2025 systems to establish your exposure baseline. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
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External POC / Exploit Code
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