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High severity7.1NVD Advisory· Published Jul 14, 2026· Updated Jul 22, 2026

CVE-2026-50428

CVE-2026-50428

Description

Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

Affected products

4

Microsoft/Windows 11 26h12 versions
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*range: <10.0.28000.2525
- cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*range: <10.0.28000.2269
Microsoft/unionfs.sysllm-create
Microsoft/Windows Container Isolation FS Filter Driverllm-fuzzy

Patches

Vulnerability mechanics

References

1

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50428nvdPatchVendor Advisory

News mentions

0

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