Description
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – < 10.0.28000.2704 | 10.0.28000.2704 |
Advisories 3
- WID-SEC-2026-2756 Microsoft Windows Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 30, 2026
- NCSC-2026-0284 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Aug 11, 2026
- MSRC-CVE-2026-62775 Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure Vulnerability Microsoft Security Response Center · Aug 11, 2026