Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Thu, 13 Aug 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows 11 26h1
CPEs cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft windows 11 26h1

Wed, 12 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description Heap-based buffer overflow in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to elevate privileges locally.
Title Windows Container Isolation FS Filter Driver (unionfs.sys) Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 11 26h1
Weaknesses CWE-122
CPEs cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft windows 11 26h1
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-14T21:47:37.313Z

Reserved: 2026-07-14T21:04:04.256Z

Link: CVE-2026-62772

cve-icon Vulnrichment

Updated: 2026-08-12T13:39:26.179Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-11T17:18:29.930

Modified: 2026-08-13T15:57:49.547

Link: CVE-2026-62772

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T17:00:06Z

Weaknesses