CVE-2026-40382: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-40382) involves a use-after-free condition in the Windows Telephony Service component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability of the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could result in full system compromise, allowing the attacker to execute code with higher privileges, potentially leading to complete control over the system.
Mitigation Recommendations
An official fix is available from Microsoft to address this vulnerability. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40382 to remediate this issue. No additional mitigation steps are indicated by the vendor.
CVE-2026-40382: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-40382) involves a use-after-free condition in the Windows Telephony Service component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability of the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could result in full system compromise, allowing the attacker to execute code with higher privileges, potentially leading to complete control over the system.
Mitigation Recommendations
An official fix is available from Microsoft to address this vulnerability. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40382 to remediate this issue. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-11T23:06:15.616Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40382","vendor":"Microsoft"}]
Threat ID: 6a036554cbff5d861008c965
Added to database: 5/12/2026, 5:37:24 PM
Last enriched: 5/12/2026, 6:51:56 PM
Last updated: 5/13/2026, 4:49:43 AM
Views: 2
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