EUVD-2026-73595
GHSA-j7v6-35jx-6282
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local service with PR:L (standard user account required); AC:L because no special heap timing or layout conditions are indicated; full CIA reflects SYSTEM-level privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Audio Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in the Windows Audio Service (AudioSrv/audiosrv.dll) enables a locally authenticated, low-privileged attacker to escalate privileges to SYSTEM level on affected Windows 10, Windows 11, and Windows Server installations. The vulnerability is confirmed by Microsoft's Security Response Center (secure@microsoft.com) and affects a broad range of supported Windows releases from build 1809 through the latest 26H1 branch. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have a valid local user account on the target Windows system (CVSS PR:L confirms authenticated local access is required). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a local privilege escalation with no special conditions or user interaction required beyond holding a standard user account. … 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 security updates via Windows Update, WSUS, or Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, scan your infrastructure to identify all Windows 10 (builds 1809-26H1), Windows 11, and Windows Server deployments and confirm your patch management capability. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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