CVE-2026-70112: Windows Spaceport.sys Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Spaceport.sys allows an authorized attacker to execute code locally.
Other sources
Windows Spaceport.sys Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized on the affected system and be able to execute code locally. The provided vector indicates low attack complexity, low privileges required, and no user interaction.
Is this exposed over the network?
The attack vector is local. The available information does not indicate that the flaw can be exploited remotely over the network without local access.
What is the potential impact after exploitation?
Successful exploitation can allow code execution and has high impacts on confidentiality, integrity, and availability. The scope is unchanged, meaning the impact is assessed within the vulnerable security authority.
Which systems should be reviewed?
Review Microsoft Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, and Windows Server 2025 systems that include Microsoft Windows Spaceport.sys.