CVE-2026-23673

HIGH
2026-03-10 [email protected]
7.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 10, 2026 - 18:18 nvd
HIGH 7.8

Tags

Information Disclosure Microsoft Buffer Overflow Windows Server 2019 Windows Server 2025 Windows Server 2022 23h2 Windows 11 26h1 Windows 10 21h2 Windows 10 1607 Windows 11 24h2 Windows 11 23h2 Windows Server 2022 Windows 10 1809 Windows 11 25h2 Windows 10 22h2 Windows Server 2012 Windows Server 2016 Windows

Description

Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

Analysis

Windows ReFS contains an out-of-bounds read vulnerability affecting Server 2019, 2022, 2025, and Windows 11 26h1 that enables authenticated local users to escalate privileges with high impact to confidentiality, integrity, and availability. The vulnerability requires low attack complexity and no user interaction, making it exploitable by any authenticated user on the system. …

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Remediation

Within 24 hours: Inventory all systems running Windows ReFS and assess user access controls. Within 7 days: Implement strict access restrictions to ReFS volumes, disable ReFS where operationally feasible, and enhance monitoring for suspicious privilege escalation attempts. …

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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +39
POC: 0

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CVE-2026-23673 vulnerability details – vuln.today
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