This vulnerability involves a heap-based buffer overflow in the Windows Kernel component of Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation requires local access with some level of authorization and can lead to privilege escalation, allowing the attacker to gain higher privileges on the affected system. The vulnerability is tracked as CWE-122. Microsoft has published an official fix to address this issue.

Successful exploitation of this vulnerability can result in an attacker elevating their privileges locally on a vulnerable Windows 10 Version 21H2 system. This could allow the attacker to execute code with higher privileges, potentially leading to full system compromise. 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-2026-33841 to remediate this vulnerability.