Use After Free in Microsoft Windows 10 Version 1809
CVE-2026-83739
Use after free in Windows Bluetooth Service allows an unauthorized attacker to execute code over an adjacent network.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21h2
- Microsoft Windows 10 Version 22h2
- Microsoft Windows 11 Version 23h2
- Microsoft Windows 11 Version 24h2
- Microsoft Windows 11 Version 25h2
- Microsoft Windows 11 Version 26h1
- Microsoft Windows 11 Version 26h2
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core Installation)
Weakness classification (CWE)
References
- Windows Bluetooth Service Remote Code Execution Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-83739?
- CVE-2026-83739 is a high-severity vulnerability in Microsoft Windows 10 Version 1809, classified under Use After Free. CVSS score: 7.5/10. Published 2026-10-13.
- How severe is CVE-2026-83739?
- High severity. CVSS v3 base score is 7.5 out of 10.