This vulnerability, identified as CVE-2026-33098 and classified under CWE-416 (Use After Free), affects the Windows Container Isolation FS Filter Driver in Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this use-after-free condition to elevate privileges on the affected system. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as referenced in their security update guide.

Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.

An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33098 to remediate this vulnerability.