CVE-2020-0878

Microsoft Browser Memory Corruption Vulnerability

CVE-2020-0878 is fixed in 58 products on 1 platform, first by KB4577015, released September 8, 2020. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, with known ransomware use. Patch Radar priority: Patch now.

Patch nowCISA KEVKnown ransomware use
CVSS
4.2
Critical
Exploitation
Exploited
Listed by CISA
CISA KEV
Nov 3, 2021
Federal due date May 3, 2022. Known ransomware use
EPSS
0.0270
86th percentile

<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>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 14393.3930 KB4577015 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 14393.3930 KB4577015 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems 16299.2107 KB4577041 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems 16299.2107 KB4577041 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems 16299.2107 KB4577041 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems 17134.1726 KB4577032 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems 17134.1726 KB4577032 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems 17134.1726 KB4577032 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems 17763.1457 KB4570333 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems 17763.1457 KB4570333 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems 17763.1457 KB4570333 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems KB4574727 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems KB4574727 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems KB4574727 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems KB4574727 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems KB4574727 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 1909 for x64-based Systems KB4574727 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 2004 for 32-bit Systems 19041.508 KB4571756 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 2004 for ARM64-based Systems 19041.508 KB4571756 Sep 8, 2020
Internet Explorer 11 on Windows 10 Version 2004 for x64-based Systems 19041.508 KB4571756 Sep 8, 2020
Internet Explorer 11 on Windows 10 for 32-bit Systems 10240.18696 KB4577049 Sep 8, 2020
Internet Explorer 11 on Windows 10 for x64-based Systems 10240.18696 KB4577049 Sep 8, 2020
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB4577051 Sep 8, 2020
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB4577051 Sep 8, 2020
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB4577066 Sep 8, 2020
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows 8.1 for x64-based systems KB4577066 Sep 8, 2020
Internet Explorer 11 on Windows 8.1 for x64-based systems KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows RT 8.1 KB4577066 Sep 8, 2020
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4577051 Sep 8, 2020
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows Server 2012 KB4577038 Sep 8, 2020
Internet Explorer 11 on Windows Server 2012 KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows Server 2012 R2 KB4577066 Sep 8, 2020
Internet Explorer 11 on Windows Server 2012 R2 KB4577010 Sep 8, 2020
Internet Explorer 11 on Windows Server 2016 14393.3930 KB4577015 Sep 8, 2020
Internet Explorer 11 on Windows Server 2019 17763.1457 KB4570333 Sep 8, 2020
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 KB4577064 Sep 8, 2020
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 KB4577010 Sep 8, 2020
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 KB4577064 Sep 8, 2020
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 KB4577010 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems 14393.3930 KB4577015 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems 14393.3930 KB4577015 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems 16299.2107 KB4577041 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems 16299.2107 KB4577041 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems 16299.2107 KB4577041 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems 17134.1726 KB4577032 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems 17134.1726 KB4577032 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems 17134.1726 KB4577032 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems 17763.1457 KB4570333 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems 17763.1457 KB4570333 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems 17763.1457 KB4570333 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems KB4574727 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems KB4574727 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems KB4574727 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems KB4574727 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems KB4574727 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems KB4574727 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for 32-bit Systems 19041.508 KB4571756 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for ARM64-based Systems 19041.508 KB4571756 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for x64-based Systems 19041.508 KB4571756 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems 10240.18696 KB4577049 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems 10240.18696 KB4577049 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows Server 2016 14393.3930 KB4577015 Sep 8, 2020
Microsoft Edge (EdgeHTML-based) on Windows Server 2019 17763.1457 KB4570333 Sep 8, 2020

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