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Description

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

PUBLISHED Reserved 2026-06-04 | Published 2026-07-14 | Updated 2026-07-14 | Assigner microsoft




HIGH: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C

Problem types

CWE-125: Out-of-bounds Read

Product status

10.0.28000.0 (custom) before 10.0.28000.2269
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50428 (Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-50428)

nvd.nist.gov (CVE-2026-50428)

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