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CVE-2026-83940— Windows Device Association Service Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1607
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Device Association Service是美国Microsoft公司的一个管理系统设备关联的服务。 Microsoft Windows Device Association Service存在资源管理错误漏洞,该漏洞源于Windows Device Association Service存在释放后重用,可能导致已授权攻击者在本地提升权限。

CVSS 7.0 · High EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 16

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.9512 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.9245 affected
Microsoft Windows 10 Version 21H2 10.0.19044.0< 10.0.19044.7725 affected
Microsoft Windows 10 Version 22H2 10.0.19045.0< 10.0.19045.7725 affected
Microsoft Windows 11 version 23H2 10.0.22631.0< 10.0.22631.7582 affected
Microsoft Windows 11 Version 23H2 10.0.22631.0< 10.0.22631.7582 affected
Microsoft Windows 11 Version 24H2 10.0.26100.0< 10.0.26100.9445 affected
Microsoft Windows 11 Version 25H2 10.0.26200.0< 10.0.26200.9445 affected
Microsoft Windows 11 version 26H1 10.0.28000.0< 10.0.28000.2954 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.9512 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.9512 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.9245 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.9245 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.5622 affected
Microsoft Windows Server 2025 10.0.26100.0< 10.0.26100.33438 affected
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0< 10.0.26100.33438 affected
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I. Basic Information for CVE-2026-83940

Vulnerability Information

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Vulnerability Title
Windows Device Association Service Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Device Association Service 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Device Association Service是美国Microsoft公司的一个管理系统设备关联的服务。 Microsoft Windows Device Association Service存在资源管理错误漏洞,该漏洞源于Windows Device Association Service存在释放后重用,可能导致已授权攻击者在本地提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.9512 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.9245 -
Microsoft Windows 10 Version 21H2 10.0.19044.0 ~ 10.0.19044.7725 -
Microsoft Windows 10 Version 22H2 10.0.19045.0 ~ 10.0.19045.7725 -
Microsoft Windows 11 version 23H2 10.0.22631.0 ~ 10.0.22631.7582 -
Microsoft Windows 11 Version 23H2 10.0.22631.0 ~ 10.0.22631.7582 -
Microsoft Windows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.9445 -
Microsoft Windows 11 Version 25H2 10.0.26200.0 ~ 10.0.26200.9445 -
Microsoft Windows 11 version 26H1 10.0.28000.0 ~ 10.0.28000.2954 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.9512 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.9512 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.9245 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.9245 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.5622 -
Microsoft Windows Server 2025 10.0.26100.0 ~ 10.0.26100.33438 -
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.33438 -

II. Public POCs for CVE-2026-83940

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III. Intelligence Information for CVE-2026-83940

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Vendor Advisories for CVE-2026-83940 (1)

Same Patch Batch · Microsoft · 2026-09-08 · 966 CVEs total

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Showing top 20 of 966 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

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