CVE-2026-62775
Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure vulnerability
MSRC advisory August 11, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-62775
- Affected products
- Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure · Microsoft Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure · Microsoft
What happened
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
What it means for your business
Windows Container Isolation FS Filter Driver (unionfs.sys) Information Disclosure vulnerability (CVE-2026-62775) was added to Microsoft’s security update guidance. Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally. If you need help checking exposure, call (864) 335-9223.
Sources
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