EUVD-2026-73013
GHSA-7c3v-7hfh-282r
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only race condition requiring low-privileged user; full C/I/A impact upon successful SYSTEM-level escalation; scope unchanged.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Audio Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Audio Service (AudioSrv) exploits a use-after-free condition (CWE-416) to allow an authenticated local attacker to gain SYSTEM-level privileges on unpatched Windows 10, Windows 11, and Windows Server 2019-2025 systems. The attack requires low user privileges and high complexity to execute, consistent with a race condition in the service's memory management. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated local user account (PR:L); the attack vector is strictly local (AV:L), making remote unauthenticated exploitation impossible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score with AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately reflects this as a local privilege escalation with meaningful exploitation difficulty - the AC:H metric captures the race-condition requirement, which substantially reduces automated and opportunistic exploitability. … 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 delivering the fixed Audio Service builds for each platform: Windows 10 1809 and Server 2019 to build 10.0.17763.9245 or later; Windows 10 21H2 to 10.0.19044.7725 or later; Windows 10 22H2 to 10.0.19045.7725 or later; Windows 11 23H2 to 10.0.22631.7582 or later; Windows 11 24H2 and Server 2025 to 10.0.26100.9445 or later; Windows 11 25H2 to 10.0.26200.9445 or later; Windows 11 26H1 to 10.0.28000.2954 or later; Windows Server 2022 to 10.0.20348.5622 or later; Windows Server 2025 Server Core to 10.0.26100.33438 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, and Server 2019-2025 systems in your environment using SCCM/Intune or equivalent patch management tools. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
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