CVE-2026-34333: Windows Win32k Elevation of Privilege Vulnerability
Use after free in Windows Win32K - GRFX 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
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Fixed in 6.3.9600.23181Patch KB5087471 - Upgrade
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Fixed in 10.0.14393.9140Patch KB5087537 - Upgrade
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Fixed in 6.2.9200.26079Patch KB5087470 - Upgrade
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Fixed in 10.0.28000.2113Patch KB5089548 - Upgrade
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Fixed in 10.0.26100.8457Fixed in 10.0.26100.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.22631.7219Patch KB5093998 - Upgrade
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Fixed in 10.0.25398.2330Patch KB5087541 - Upgrade
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Fixed in 10.0.26100.32860Fixed in 10.0.26100.32772Patch KB5087423 - Upgrade
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Fixed in 10.0.22631.7079Patch KB5087420 - Upgrade
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Fixed in 10.0.19045.7417Patch KB5094127 - Upgrade
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Fixed in 10.0.26200.8457Fixed in 10.0.26200.8390Patch KB5089466 - Upgrade
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Fixed in 10.0.19044.7291Patch KB5087544 - Upgrade
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Fixed in 10.0.20348.5139Fixed in 10.0.20348.5074Patch KB5087424 - Upgrade
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Fixed in 10.0.17763.8755Patch KB5087538
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34333?
The severity of CVE-2026-34333 is considered to be critical due to its ability to allow an attacker to elevate privileges locally.
How do I fix CVE-2026-34333?
Fixing CVE-2026-34333 involves applying the appropriate security updates or patches provided by Microsoft for affected Windows products.
What products are affected by CVE-2026-34333?
CVE-2026-34333 affects various versions of Windows, including Windows Server 2016, Windows 11, Windows Server 2012 R2, and others.
Can I check if my system is vulnerable to CVE-2026-34333?
Yes, you can check the vulnerability status of your system by comparing your system's version against the list of affected software for CVE-2026-34333.
Is there a workaround for CVE-2026-34333?
Currently, the recommended solution for CVE-2026-34333 is to apply the latest security patches rather than relying on a workaround.