Executive brief
A heap buffer overflow vulnerability exists in Windows Spaceport.sys, a system driver used for kernel-level operations. An attacker with physical access to a device could exploit this flaw to execute arbitrary code with elevated privileges, potentially compromising system integrity and control.
Technical details
A heap-based buffer overflow exists in the Windows Spaceport.sys driver, which is responsible for managing low-level system operations. The vulnerability allows an attacker with physical access to exploit the buffer overflow condition to execute arbitrary code in kernel context. This is a local privilege escalation vector requiring physical access to the system and the ability to interact with hardware resources exposed by Spaceport.sys. Successful exploitation could allow code execution at the highest privilege level (SYSTEM/kernel), enabling complete system compromise. Microsoft has released security updates to address this vulnerability; patches should be applied immediately to affected systems.
Affected products
- Microsoft Windows <UNKNOWN>
Timeline
- 2026-09-08: disclosed