EUVD-2026-73046
GHSA-wm39-r5pm-2mgw
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector and low privilege match 'authorized local attacker'; AC:H reflects race condition exploitation; full C/I/A reflects SYSTEM-level privilege escalation.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation via use-after-free in the Windows Bluetooth Service allows a locally authenticated attacker to gain SYSTEM-level privileges on a broad range of Windows versions. The memory corruption vulnerability (CWE-416) requires low initial privileges and high attack complexity, consistent with a race condition in Bluetooth service memory management. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a locally authenticated account on the target system - the CVSS PR:L confirms low-privilege credentials suffice; no administrator or elevated token is needed to initiate the attack. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.0 (AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) places this as a high-severity local privilege escalation with meaningful exploitation difficulty. … 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 cumulative updates from Microsoft that bring affected builds to or above the fixed build numbers listed per version: 10.0.17763.9245 (Server 2019/Win10 1809), 10.0.19044.7725 and 10.0.19045.7725 (Win10 21H2/22H2), 10.0.20348.5622 (Server 2022), 10.0.22631.7582 (Win11 23H2), 10.0.26100.9445/33438 (Win11 24H2/Server 2025), 10.0.26200.9445 (Win11 25H2), 10.0.28000.2954 (Win11 26H1). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows systems in your environment and identify which have Bluetooth services enabled, prioritizing Tier 1 assets (domain controllers, servers, administrative workstations, and high-value endpoints). …
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Same weakness CWE-416 – Use After Free
View allSame technique Privilege Escalation
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External POC / Exploit Code
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