CVE-2026-62775

MEDIUMCVSS 5.5/10

Last modified

CVE-2026-62775 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally..

Description

Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.

Metrics

CVSS 3.1
5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
MicrosoftWindows 11 version 26H1>= 10.0.28000.0, < 10.0.28000.2704

References

Timeline

Published
Last Modified
Status
Undergoing Analysis

Frequently Asked Questions

What is CVE-2026-62775?
Incorrect authorization in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to disclose information locally.
How severe is CVE-2026-62775?
CVE-2026-62775 has a CVSS score of 5.5/10 (MEDIUM severity).
How do I fix CVE-2026-62775?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST