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CVE-2020-1380

7.8
HIGHCVSS v3.1 Base Score
91.73%
HIGH RiskEPSS (100th percentile)
KEV

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability through Internet Explorer and then convince a user to view the website. An attacker could also embed an ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the IE rendering engine. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit the vulnerability. The security update addresses the vulnerability by modifying how the scripting engine handles objects in memory.

Published: 8/17/2020
Modified: 10/29/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

Vendor / Product:

Microsoft Internet Explorer

Required Action:

Apply updates per vendor instructions.

Due Date: 5/3/2022(OVERDUE)
Added to KEV:

11/3/2021

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2020-1380

Vulnerability Summary

CVSS v3 Score

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2 Score

7.6

AV:N/AC:H/Au:N/C:C/I:C/A:C

EPSS Score (Exploitation Probability)

91.73%HIGH Exploitation Risk
100th percentile

This vulnerability has a 91.73% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

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