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HIGH · 7.1

CVE-2026-50428

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

Vulnerability Description

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

CVSS Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftWindows 11 26H1< 10.0.28000.2269

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2026-50428?

CVE-2026-50428 is a vulnerability with a CVSS score of 7.1 (HIGH). Out-of-bounds read in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

How severe is CVE-2026-50428?

CVE-2026-50428 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-50428?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 26H1.