This vulnerability is a heap-based buffer overflow in the Windows Kernel component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The vulnerability is tracked as CWE-122 and has a CVSS v3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix to address this issue.

Successful exploitation allows an authorized local attacker to gain elevated privileges, potentially leading to full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability, as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at this time.

An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50484 to remediate this vulnerability.