Exploited
high
8.8
CWE
22
Advisory Published
Updated

CVE-2021-40444: Microsoft MSHTML Remote Code Execution Vulnerability

First published: Wed Sep 15 2021(Updated: )

Microsoft MSHTML contains a unspecified vulnerability that allows for remote code execution.

Credit: secure@microsoft.com secure@microsoft.com secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=20h2
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows 10 1507<10.0.10240.19060
Microsoft Windows 10 1607<10.0.14393.4651
Microsoft Windows 10 1809<10.0.17763.2183
Microsoft Windows 10 1909<10.0.18363.1801
Microsoft Windows 10 2004<10.0.19041.1237
Microsoft Windows 10 20h2<10.0.19042.1237
Microsoft Windows 10 21h1<10.0.19043.1237
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows Server 2004<10.0.19041.1237
Microsoft Windows Server 2016<10.0.14393.4651
Microsoft Windows Server 2019<10.0.17763.2183
Microsoft Windows Server 2022<10.0.20348.230
Microsoft Windows Server 20h2<10.0.19042.1237
Microsoft MSHTML
<10.0.10240.19060
<10.0.14393.4651
<10.0.17763.2183
<10.0.18363.1801
<10.0.19041.1237
<10.0.19042.1237
<10.0.19043.1237
=sp1
<10.0.19041.1237
=sp2
=r2-sp1
=r2
<10.0.14393.4651
<10.0.17763.2183
<10.0.20348.230
<10.0.19042.1237

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40444

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-40444?

    CVE-2021-40444 is a Microsoft MSHTML Remote Code Execution Vulnerability.

  • What is the severity of CVE-2021-40444?

    The severity of CVE-2021-40444 is high with a CVSS score of 7.8.

  • Which software is affected by CVE-2021-40444?

    Microsoft MSHTML and various versions of Microsoft Windows 10, Windows 7, Windows 8.1, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows Server 2016, Windows Server 2019, and Windows Server 2022 are affected by CVE-2021-40444.

  • How can I fix CVE-2021-40444?

    Apply the security updates provided by Microsoft to fix CVE-2021-40444.

  • Where can I find more information about CVE-2021-40444?

    You can find more information about CVE-2021-40444 at the following references: http://packetstormsecurity.com/files/164210/Microsoft-Windows-MSHTML-Overview.html, http://packetstormsecurity.com/files/165214/Microsoft-Office-Word-MSHTML-Remote-Code-Execution.html, http://packetstormsecurity.com/files/167317/Microsoft-Office-MSDT-Follina-Proof-Of-Concept.html

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