CVE-2026-24283

Multiple UNC Provider Kernel Driver Elevation of Privilege Vulnerability

State: Published
Severity: 8.8 High
Published: Mar 10, 2026
Updated: Jun 19, 2026
Reserved: Jan 21, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.8037Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.8037Affected
Windows 11 version 26H1Microsoft	10.0.28000.0 to before 10.0.28000.1719Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.2207Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.32522Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.32522Affected

References

Multiple UNC Provider Kernel Driver Elevation of Privilege Vulnerabilityvendor-advisorypatch

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