CVE-2026-69347: Windows Fast FAT Driver Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
Other sources
Windows Fast FAT Driver Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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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 10.0.19044.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
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Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
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Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
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Fixed in 10.0.28000.2954Patch KB5124012 - 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 10.0.20348.5622Patch KB5122882 - Upgrade
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Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
Does exploiting this issue require prior access to the affected system?
Yes. The supplied severity vector identifies the attack vector as local, so an attacker must be able to execute or otherwise act locally on the affected Windows system.
What level of access is needed before exploitation?
The supplied vector lists privileges required as none and user interaction as none. This indicates that no authenticated privileges or victim interaction are identified as prerequisites once local attack capability is available.
What is the potential impact if exploitation succeeds?
Successful exploitation can allow code execution and is rated as having high confidentiality, integrity, and availability impact. The vulnerability is a heap-based buffer overflow in the Windows Fast FAT Driver.
Which systems should be assessed for exposure?
Assess Microsoft Windows 10 and Windows 11, plus Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025 systems listed in the affected software data.