CVE-2021-41379: Microsoft Windows Installer Privilege Escalation Vulnerability

Published Nov 9, 2021
·
Updated

Microsoft Windows Installer contains an unspecified vulnerability that allows for privilege escalation.

Other sources

Windows Installer Elevation of Privilege Vulnerability

— Microsoft

Affected Software

79 affected componentsFixes available
Microsoft Windows 10=20H2
Patch available
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 11
Microsoft Windows 11
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
Microsoft Windows 10 1507<10.0.10240.19119
Microsoft Windows 10 1607<10.0.14393.4770
Microsoft Windows 10 1809<10.0.17763.2300
Microsoft Windows 10 1909<10.0.18363.1916
Microsoft Windows 10 2004<10.0.19041.1348
Microsoft Windows 10 20h2<10.0.19042.1348
Microsoft Windows 10 21h1<10.0.19043.1348
Microsoft Windows 11 21h2<10.0.22000.318
Microsoft Windows Server 2004<10.0.19041.1348
Microsoft Windows Server 2016<10.0.14393.4770
Microsoft Windows Server 2019<10.0.17763.2300
Microsoft Windows Server 2022<10.0.20348.350
Microsoft Windows Server 20h2<10.0.19042.1348
Microsoft Windows Server 2012 R2<6.3.9600.20174
6.3.9600.20174
Microsoft Windows Server 2012<6.2.9200.23517
6.2.9200.23517
Microsoft Windows Server 2012<6.2.9200.23517
6.2.9200.23517
Microsoft Windows Server 2012 R2<6.3.9600.20174
6.3.9600.20174
Microsoft Windows Server 2008<6.0.6003.21282
6.0.6003.21282
Microsoft Windows Server 2008 R2<6.1.7601.25769
6.1.7601.25769
Microsoft Windows Server 2008 R2<6.1.7601.25769
6.1.7601.25769
Microsoft Windows Server 2008<6.0.6003.21282
6.0.6003.21282
Microsoft Windows Server 2008<6.0.6003.21282
6.0.6003.21282
Microsoft Windows RT 8.1<6.3.9600.20174
6.3.9600.20174
Microsoft Windows Server 2008<6.0.6003.21282
6.0.6003.21282
Microsoft Windows 7<6.1.7601.25769
6.1.7601.25769
Microsoft Windows 8.1 for 32-bit systems<6.3.9600.20174
6.3.9600.20174
Microsoft Windows 8.1 for x64-based systems<6.3.9600.20174
6.3.9600.20174
Microsoft Windows 7<6.1.7601.25769
6.1.7601.25769
Microsoft Windows 10=1607
10.0.14393.4770
Microsoft Windows Server 2016<10.0.14393.4770
10.0.14393.4770
Microsoft Windows 10=1607
10.0.14393.4770
Microsoft Windows Server 2016<10.0.14393.4770
10.0.14393.4770
Microsoft Windows 10<10.0.10240.19119
10.0.10240.19119
Microsoft Windows 10=20H2
10.0.19042.1348
Microsoft Windows 10<10.0.10240.19119
10.0.10240.19119
Microsoft Windows Server=2004
10.0.19041.1348
Microsoft Windows Server=20H2
10.0.19042.1348
Microsoft Windows 10=2004
10.0.19041.1348
Microsoft Windows 11=21H2
10.0.22000.318
Microsoft Windows 11=21H2
10.0.22000.318
Microsoft Windows 10=2004
10.0.19041.1348
Microsoft Windows 10=20H2
10.0.19042.1348
Microsoft Windows Server 2022<10.0.20348.350
10.0.20348.350
Microsoft Windows 10=2004
10.0.19041.1348
Microsoft Windows 10=21H1
10.0.19043.1348
Microsoft Windows 10=21H1
10.0.19043.1348
Microsoft Windows 10=1909
10.0.18363.1916
Microsoft Windows Server 2022<10.0.20348.350
10.0.20348.350
Microsoft Windows 10=1909
10.0.18363.1916
Microsoft Windows 10=21H1
10.0.19043.1348
Microsoft Windows Server 2019<10.0.17763.2300
10.0.17763.2300
Microsoft Windows 10=1909
10.0.18363.1916
Microsoft Windows Server 2019<10.0.17763.2300
10.0.17763.2300
Microsoft Windows 10=1809
10.0.17763.2300
Microsoft Windows 10=1809
10.0.17763.2300
Microsoft Windows 10=1809
10.0.17763.2300

Remediation

Patch Available

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41379

Event History

Nov 9, 2021
CVE Published
via Microsoft·08:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·08:00 AM
Description
Nov 10, 2021
CVE Published
via MITRE·12:46 AM
Data Sourced
via MITRE·12:46 AM
DescriptionSeverity
Data Sourced
via NVD·01:19 AM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 11, 2021
Advisory Published
via ZDI·12:00 AM
Data Sourced
via ZDI·12:00 AM
DescriptionSeverityAffected Software
Mar 3, 2022
Known Exploited
via CISA·12:00 AM
Known Ransomware
via CISA·12:00 AM

Frequently Asked Questions

1

What is the severity of CVE-2021-41379?

CVE-2021-41379 has been classified as a high severity vulnerability that allows for privilege escalation in Microsoft Windows Installer.

2

How do I fix CVE-2021-41379?

To mitigate CVE-2021-41379, apply the relevant security patches provided by Microsoft for your version of Windows.

3

Which versions of Windows are affected by CVE-2021-41379?

CVE-2021-41379 affects multiple versions of Microsoft Windows including Windows 10, Windows 11, and various Windows Server versions.

4

Is there a workaround for CVE-2021-41379?

Currently, Microsoft recommends applying the security updates as the primary means of protection against CVE-2021-41379.

5

How does CVE-2021-41379 impact system security?

CVE-2021-41379 potentially allows attackers to elevate their privileges, which may lead to unauthorized access and control over the system.

Company

Resources

Contact

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