CVE-2026-62728: Windows Common Log File System Driver Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
Other sources
Windows Common Log File System Driver Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
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Fixed in 6.2.9200.26279Patch KB5120385 - Upgrade
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Fixed in 10.0.28000.2704Patch KB5121000 - Upgrade
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Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
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Fixed in 10.0.17763.9115Patch KB5120238 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26000.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.22631.7517Patch KB5120240 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 6.3.9600.23337Patch KB5120386
Event History
Frequently Asked Questions
What is CVE-2026-62728?
CVE-2026-62728 is a vulnerability in the Windows Common Log File System Driver that allows an authorized attacker to elevate privileges locally due to a time-of-check time-of-use race condition.
What is the severity of CVE-2026-62728?
The severity of CVE-2026-62728 is rated high with a score of 7.
How do I fix CVE-2026-62728?
To fix CVE-2026-62728, apply the latest security updates provided by Microsoft for your affected Windows version.
Which versions of Windows are affected by CVE-2026-62728?
CVE-2026-62728 affects Microsoft Windows 10, Windows 11, and various versions of Windows Server including 2012, 2016, 2019, 2022, and more.
What type of vulnerability is CVE-2026-62728 classified as?
CVE-2026-62728 is classified as a race condition vulnerability.