CVE-2026-69535: Windows Spaceport.sys Elevation of Privilege Vulnerability
Numeric truncation error in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
Other sources
Windows Spaceport.sys Elevation of Privilege 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 10.0.19045.7725Patch KB5122878 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized on the affected Windows system and have local access. The issue is an elevation-of-privilege flaw, so it does not describe remote exploitation.
Which systems should be evaluated for exposure?
Evaluate systems running Microsoft Windows 10, Windows 11, Windows Server 2022, or Windows Server 2025, as well as systems containing Microsoft Windows Spaceport.sys. The provided information does not identify affected build numbers or configurations.
What level of impact could successful exploitation have?
Successful exploitation could allow the authorized local attacker to elevate privileges. The supplied severity vector indicates high impact to confidentiality, integrity, and availability.