Zero-day vulnerability in Windows

Buffer overflow
CVE-2021-33742

The vulnerability was reported by GoogleтАЩs Threat Analysis Group.

Vulnerability details

Advisory: SB2021060819 - Remote code execution in Windows MSHTML Platform

Vulnerable component: Windows

CVE-ID: CVE-2021-33742

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description:

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content within Windows MSHTML Platform. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

External links:

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-33742