CVE-2020-0878

medium Microsoft ⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
4.2
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS Score
5.3%
Exploitation probability in 30 days
Top 10% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Published: September 11, 2020 (2071 days ago)
Last Modified: February 23, 2026
Vendor: Microsoft

⚠️ CISA Known Exploited Vulnerability

Added to KEV: 2021-11-03
Remediation Due: 2022-05-03 (⚠ 1473d overdue)
Ransomware Campaign: Known

Description

<p>A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to 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, the attacker 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.</p> <p>An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft browsers, and then convince a user to view the website. The attacker could also take advantage of compromised websites, or websites that accept or host user-provided content or advertisements, by adding specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically via an enticement in email or instant message, or by getting them to open an email attachment.</p> <p>The security update addresses the vulnerability by modifying how Microsoft browsers handle objects in memory.</p>

CWE

CWE-787

Affected Products

microsoft internet explorermicrosoft edgemicrosoft chakracore

References