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Windows Bluetooth Service EUVDEUVD-2026-73488

| CVE-2026-69398 HIGH
Race Condition (CWE-362)
2026-09-08 secure@microsoft.com GHSA-cp6h-wxv7-jvfp
7.0
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
7.0 HIGH
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.0 HIGH

Local vector and high complexity reflect race condition timing requirement; PR:L reflects need for an existing authenticated foothold; full CIA impact reflects SYSTEM-level privilege gain.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Metadata Corrected
Sep 09, 2026 - 05:40 vuln.today
tag: Information Disclosure replaced by Privilege Escalation
Analysis Generated
Sep 09, 2026 - 04:47 vuln.today
Patch available
Sep 08, 2026 - 18:35 EUVD
CVE Published
Sep 08, 2026 - 18:19 nvd
HIGH 7.0

DescriptionCVE.org

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.

AnalysisAI

Privilege escalation in the Windows Bluetooth Service enables a locally authenticated low-privileged user to gain SYSTEM-level access across a wide range of Windows 10, Windows 11, and Windows Server versions. The root cause is a race condition (CWE-362) in shared resource handling within the Bluetooth service, where competing threads can exploit an unsynchronized access window to trigger a privileged operation in the attacker's context. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires an existing authenticated low-privileged local account or code execution context on the target system (PR:L per CVSS vector) - unauthenticated remote attackers cannot directly exploit this vulnerability. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.0 score accurately reflects a constrained but consequential attack profile. … 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 for the applicable Windows version, advancing affected builds to the patched thresholds confirmed in the EUVD data: Windows 10 21H2/22H2 to 10.0.19044.7725/10.0.19045.7725, Windows 11 23H2 to 10.0.22631.7582, Windows 11 24H2 to 10.0.26100.9445, Windows 11 25H2 to 10.0.26200.9445, Windows 11 26H1 to 10.0.28000.2954, Windows Server 2019 to 10.0.17763.9245, Windows Server 2022 to 10.0.20348.5622, and Windows Server 2025 to 10.0.26100.33438. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all Windows 10, Windows 11, and Windows Server systems in your environment and prioritize those with direct user access. …

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EUVD-2026-73488 vulnerability details – vuln.today

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