CVE-2021-34448mediumunder attackCWE-787

CVE-2021-34448: medium-severity vulnerability in Microsoft Windows 10 Version 1507

Scripting Engine Memory Corruption Vulnerability

Published · Updated

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55Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Attendcvss 6.8epss 40%
from disclosure to weapon
Published on NVDJul 16
CISA KEV+110d
Action required by CISAfederal deadline: 2021-11-17

Apply updates per vendor instructions.

In short

A flaw in the scripting engine allows attackers to corrupt memory by sending specially crafted input, potentially causing the application to crash or behave unexpectedly. This vulnerability requires user interaction or specific conditions to be exploited.

Technical detail

CWE-787 (Out-of-bounds Write) in the scripting engine allows an attacker to write beyond allocated buffer boundaries through malformed script input. Exploitation typically requires script execution context and can result in denial of service or potential code execution depending on memory layout and mitigations.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Scripting Engine Memory Corruption Vulnerability
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C