This vulnerability, identified as CVE-2026-26163 and classified under CWE-415 (Double Free), affects Windows 10 Version 1607 (build 10.0.14393.0). It involves a double free condition in the Windows Kernel that can be exploited by an authorized local attacker to elevate privileges. The CVSS 3.1 base score is 7.8, indicating high severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability.

An authorized local attacker can exploit this double free vulnerability to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges obtained.

An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26163 for detailed patch information and deployment guidance.