CVE-2021-40455: Windows Installer Spoofing Vulnerability
Published Oct 13, 2021
·Updated
Windows Installer Spoofing Vulnerability
Affected Software
36 affected components
Microsoft Windows 10
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=20h2
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=21h1
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1809
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=1909
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 10=2004
Microsoft Windows 10=2004
Microsoft Windows 11
Microsoft Windows 11
Microsoft Windows 7=sp1
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server=20h2
Microsoft Windows Server 2008=sp2
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=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Event History
Oct 13, 2021
CVE Published
via MITRE·12:26 AM
Data Sourced
via MITRE·12:26 AM
DescriptionSeverity
Data Sourced
via NVD·01:15 AM
RemedyDescriptionSeverityAffected Software
Frequently Asked Questions
1
What is CVE-2021-40455?
CVE-2021-40455 is a Windows Installer Spoofing Vulnerability.
2
Which software is affected by CVE-2021-40455?
Microsoft Windows 10, Windows 11, Windows 7, Windows 8.1, Windows RT 8.1, and various versions of Windows Server are affected by CVE-2021-40455.
3
What is the severity of CVE-2021-40455?
CVE-2021-40455 has a severity rating of 5.5, which is considered medium.
4
How can I fix CVE-2021-40455?
To fix CVE-2021-40455, apply the security updates provided by Microsoft.
5
Where can I find more information about CVE-2021-40455?
You can find more information about CVE-2021-40455 on the Microsoft Security Guidance Advisory page: [link](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40455).