Executive brief
A heap-based buffer overflow vulnerability in the Windows Kernel allows an authorized local user to execute code with elevated privileges on an affected system. Successful exploitation could lead to complete compromise of the system, allowing an attacker to take full control, access sensitive data, or deploy malware with system-level permissions.
Technical details
A heap-based buffer overflow exists in the Windows Kernel that can be exploited by an authenticated local attacker to elevate privileges. The vulnerability requires the attacker to have local access to the system. By triggering the overflow condition, an attacker can overwrite heap memory and potentially achieve arbitrary code execution in the kernel context, resulting in privilege escalation from user to system level. A patch from Microsoft is available and should be applied to remediate this issue.
Affected products
- Microsoft Windows Kernel <UNKNOWN>
Timeline
- 2026-09-08: disclosed