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Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability

🗓️ 11 Aug 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 24 Views

Windows Container Isolation FS Filter Driver (unionfs.sys) link following allows local tampering via improper file access.

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microsoftwindows_11_26h1Range<10.0.28000.2704x64
microsoftwindows_11_26h1Range<10.0.28000.2704x64

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11 Aug 2026 14:00Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.15.5
EPSS0.00473
SSVC
24