CVE-2026-69643: Windows Spaceport.sys Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to elevate privileges over a network.
Other sources
Windows Spaceport.sys Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Event History
Frequently Asked Questions
What level of access does an attacker need before exploiting this issue?
The attacker must already be authorized, meaning they need existing low-level or otherwise valid access to the affected system. Exploitation also requires user interaction.
Can this be exploited remotely?
Yes. The attack vector is network-based, so the vulnerable Windows Spaceport.sys component may be targeted over a network by an authorized attacker.
What is the likely impact of successful exploitation?
Successful exploitation can elevate the attacker’s privileges and has high potential impact on confidentiality, integrity, and availability. This could allow the attacker to gain more control over the affected Windows system.
Which Windows platforms are identified as affected?
The listed affected platforms are Windows 10, Windows 11, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2025.