CVE-2026-102208: Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
Other sources
Windows Win32 Kernel Subsystem 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 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26434Patch KB5126835
Event History
Frequently Asked Questions
Who is exposed to this issue?
Systems running the listed Microsoft Windows client or server products, including Windows 10, Windows 11, Windows Server 2012, 2012 R2, 2016, 2019, and 2022, are identified as affected.
What level of access does an attacker need?
An attacker must already be authorized on the target system and exploit the issue locally. The supplied vector indicates low privileges are sufficient, no user interaction is required, and exploitation has high attack complexity.
What is the potential impact after successful exploitation?
Successful exploitation can elevate the attacker’s privileges locally. The provided impact metrics rate confidentiality, integrity, and availability impact as high.