EUVD-2026-73433
GHSA-3rw2-2mp8-xxjq
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local-only access (AV:L), low-privileged authenticated user required (PR:L), high complexity for kernel UAF race condition (AC:H), full system impact post-exploitation (C:H/I:H/A:H).
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Kernel Streaming WOW Thunk Service Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in the Windows Kernel Streaming WOW Thunk Service Driver allows a low-privileged authenticated local attacker to gain SYSTEM-level access across a broad swath of Windows versions spanning Windows 10 through Windows 11 26H1 and Windows Server 2012 through 2025. The vulnerability stems from a use-after-free (CWE-416) condition, a memory safety flaw in the WOW (Windows-on-Windows) 32-to-64-bit thunk layer used by the kernel audio/multimedia streaming subsystem. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already possess a low-privileged (non-anonymous) authenticated session on the target Windows system - either a local interactive login or an established remote session (e.g., RDP). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.0 score and vector (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately characterize the threat profile: this is a local privilege escalation flaw, not a network-reachable vulnerability, substantially limiting its attack surface compared to remote exploits. … 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 Microsoft's security update for the relevant Windows version as published in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69275. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems in the environment (Windows 10, Windows 11, and Windows Server 2012-2025) to identify exposure scope. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allShare
External POC / Exploit Code
Leaving vuln.today