CVE-2026-69779: Windows Win32k Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Win32K allows an authorized attacker to elevate privileges locally.
Other sources
Windows Win32k 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 6.3.9600.23397Patch KB5123066 - Upgrade
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Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
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Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
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Fixed in 10.0.28000.2954Patch KB5124012 - Upgrade
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Fixed in 10.0.17763.9245Patch KB5122876 - Upgrade
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Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
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Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
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Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.20348.5622Patch KB5122882
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized to access the affected Windows system locally. The provided information does not indicate that remote, unauthenticated exploitation is possible.
What level of access does an attacker need before exploitation?
The attacker needs low-level privileges on the affected system. Successful exploitation can elevate those privileges and affect confidentiality, integrity, and availability.
Are Windows client and server systems in scope?
Yes. The listed affected products include Windows 10, Windows 11, and Windows Server releases from 2012 through 2025, including Windows Server 2012, 2012 R2, 2016, 2019, and 2022.
Does exploitation require user interaction?
No. The supplied vector indicates that no user interaction is required, although exploitation requires local access and has high attack complexity.