CVE-2026-62775
Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure Vulnerability
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
| Vendor | microsoft |
| Product | windows 11 version 26h1 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Aug 11, 2026 |
| Last Updated | Aug 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Windows 11 version 26H1
10.0.28000.0 < 10.0.28000.2704