CVE-2026-27922: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the Windows Ancillary Function Driver for WinSock component of Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with low privileges and no user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this issue.
Potential Impact
An authorized local attacker could exploit this vulnerability to elevate privileges on the affected Windows 10 Version 1607 system. This could result in full control over the system, affecting confidentiality, integrity, and availability of data and system resources. There are no reports of active exploitation in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27922 to remediate this vulnerability.
CVE-2026-27922: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Windows Ancillary Function Driver for WinSock component of Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with low privileges and no user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this issue.
Potential Impact
An authorized local attacker could exploit this vulnerability to elevate privileges on the affected Windows 10 Version 1607 system. This could result in full control over the system, affecting confidentiality, integrity, and availability of data and system resources. There are no reports of active exploitation in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27922 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-24T21:35:49.687Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27922","vendor":"Microsoft"}]
Threat ID: 69de7a2482d89c981fd6b9f3
Added to database: 4/14/2026, 5:32:20 PM
Last enriched: 4/14/2026, 6:47:44 PM
Last updated: 4/15/2026, 6:03:22 AM
Views: 3
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