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Windows Container Isolation FS Filter Driver (unionfs.sys) Elevation of Privilege Vulnerability

🗓️ 11 Aug 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 3 Views

Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) enables local privilege escalation by authorized attackers.

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Detection
Vulners
Node
OR
microsoftwindows_11_26h1Range<10.0.28000.2704x64
microsoftwindows_11_26h1Range<10.0.28000.2704x64

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