CVE-2026-85901: Windows Graphics Component Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
Other sources
Windows Graphics Component 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 10.0.26200.9711Patch KB5127648 - Upgrade
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Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
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Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
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Fixed in 6.3.9600.23470Patch KB5126836 - Upgrade
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Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
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Fixed in 6.2.9200.26434Patch KB5126835 - Upgrade
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Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
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Fixed in 10.0.28000.3231Patch KB5127646 - 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 10.0.26100.33650Patch 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 10.0.17763.9376Patch KB5126651
Event History
Frequently Asked Questions
Who can exploit this vulnerability?
An attacker must already be authorized to access a vulnerable Windows system and exploit it locally. The available data does not indicate that it can be exploited remotely or that user interaction is required.
Which systems should be prioritized for remediation?
Prioritize affected Windows systems where lower-privileged users can log on or execute code, because successful exploitation can elevate privileges and affect confidentiality, integrity, and availability. Listed platforms include Windows 10, Windows 11, and Windows Server 2012 through Windows Server 2025.
What is the impact of successful exploitation?
Successful exploitation allows local privilege elevation through a heap-based buffer overflow in Win32K - GRFX. The severity vector indicates high impact to confidentiality, integrity, and availability.