CVE-2026-83940: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-83940) involves a use-after-free condition in the Windows Device Association Service on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with limited privileges and no user interaction. Successful exploitation could allow an attacker to elevate their privileges, potentially gaining higher system rights. Microsoft has published an official fix addressing this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges on the affected system. This could lead to full control over the system, impacting confidentiality, integrity, and availability.
Mitigation Recommendations
Apply the official patch provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83940. This update resolves the use-after-free vulnerability in the Windows Device Association Service.
CVE-2026-83940: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-83940) involves a use-after-free condition in the Windows Device Association Service on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with limited privileges and no user interaction. Successful exploitation could allow an attacker to elevate their privileges, potentially gaining higher system rights. Microsoft has published an official fix addressing this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges on the affected system. This could lead to full control over the system, impacting confidentiality, integrity, and availability.
Mitigation Recommendations
Apply the official patch provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83940. This update resolves the use-after-free vulnerability in the Windows Device Association Service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-31T23:40:59.641Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83940","vendor":"Microsoft"}]
Threat ID: 6aa04575acd9273b49fbbacf
Added to database: 09/08/2026, 17:27:17 UTC
Last enriched: 09/08/2026, 18:07:18 UTC
Last updated: 09/08/2026, 18:54:24 UTC
Views: 2
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