CVE-2021-31979highunder attackCWE-119

CVE-2021-31979: high-severity vulnerability in Microsoft Windows 10 Version 1507

Windows Kernel Elevation of Privilege Vulnerability

Published · Updated

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51Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 7.8epss 4.5%
from disclosure to weapon
Published on NVDJul 14
CISA KEV+112d
Action required by CISAfederal deadline: 2021-11-17

Apply updates per vendor instructions.

In short

A flaw in the Windows Kernel allows an attacker with local access to run code with system-level privileges, potentially taking complete control of the computer. This is dangerous because it lets ordinary programs escalate to administrator rights without authorization.

Technical detail

A buffer overflow vulnerability (CWE-119) in the Windows Kernel permits local privilege escalation when a specially crafted request is processed. Requires prior local code execution; successful exploitation grants SYSTEM-level privileges, enabling full system compromise.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Windows Kernel Elevation of Privilege Vulnerability
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C