Zero-day vulnerability in Windows

Permissions, Privileges, and Access Controls

The vulnerability was reported to Microsoft by Kaspersky Lab.

Vulnerability details

Advisory: SB2021060816 - Privilege escalation in Microsoft Windows NTFS

Vulnerable component: Windows

CVE-ID: CVE-2021-31956

CVSSv3 score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists within the NTFS subsystem in Microsoft Windows. A local user can run a specially crafted program to execute arbitrary code with elevated privileges.

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