CVE-2018-8653highunder attackCWE-787

CVE-2018-8653: high-severity vulnerability in Microsoft Internet Explorer 9

Published · Updated

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56Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 7.5epss 30%
from disclosure to weapon
Published on NVDDec 20
CISA KEV+1049d
Action required by CISAfederal deadline: 2022-05-03

Apply updates per vendor instructions.

In short

Internet Explorer's scripting engine incorrectly handles objects in memory, allowing an attacker to execute arbitrary code remotely by crafting a malicious webpage. This is a critical flaw because it bypasses the browser's security protections.

Technical detail

Memory corruption vulnerability in the scripting engine of IE 9, 10, and 11 enables remote code execution when a user visits a malicious webpage containing crafted objects. The attack requires user interaction (visiting the webpage) and succeeds due to improper memory handling in object processing, leading to full system compromise.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8643.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H