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CVE-2026-62722

HighCVSS 7.8/10Last modified Aug 17, 2026

Description

Heap-based buffer overflow in Windows Brokering File System allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Vendor	Product	Versions
Microsoft	Windows 11 Version 24H2	>= 10.0.26100.0, < 10.0.26100.9168
Microsoft	Windows 11 Version 25H2	>= 10.0.26200.0, < 10.0.26200.9168
Microsoft	Windows 11 version 26H1	>= 10.0.28000.0, < 10.0.28000.2704
Microsoft	Windows Server 2025	>= 10.0.26100.0, < 10.0.26100.33296
Microsoft	Windows Server 2025 (Server Core installation)	>= 10.0.26100.0, < 10.0.26100.33296

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62722Patch, Vendor Advisory

Timeline

Published: Aug 11, 2026
Last modified: Aug 17, 2026
NVD status: Modified

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CVE-2026-62722: High severity, CVSS 7.8 | Vulnix