CVE-2021-40454

Rich Text Edit Control Information Disclosure Vulnerability

Description

Rich Text Edit Control Information Disclosure Vulnerability

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory microsoft.com
Affected: Microsoft Windows 10 Version 1809
Affected: Microsoft Windows Server 2019
Affected: Microsoft Windows Server 2019 (Server Core installation)
Affected: Microsoft Windows 10 Version 1909
Affected: Microsoft Windows 10 Version 21H1
Affected: Microsoft Windows Server 2022
Affected: Microsoft Windows 10 Version 2004
Affected: Microsoft Windows Server version 2004
Affected: Microsoft Windows 10 Version 20H2
Affected: Microsoft Windows Server version 20H2
Affected: Microsoft Windows 11 version 21H2
Affected: Microsoft Windows 10 Version 1507
Affected: Microsoft Windows 10 Version 1607
Affected: Microsoft Windows Server 2016
Affected: Microsoft Windows Server 2016 (Server Core installation)
Affected: Microsoft Windows 8.1
Affected: Microsoft Windows Server 2012
Affected: Microsoft Windows Server 2012 (Server Core installation)
Affected: Microsoft Windows Server 2012 R2
Affected: Microsoft Windows Server 2012 R2 (Server Core installation)
Affected: Microsoft Microsoft Office 2019
Affected: Microsoft Microsoft Office 2019 for Mac
Affected: Microsoft Microsoft 365 Apps for Enterprise
Affected: Microsoft Microsoft Office 2016
Affected: Microsoft Microsoft Office 2013 Service Pack 1
Affected: Microsoft Microsoft Office LTSC 2021
Affected: Microsoft Microsoft Office LTSC for Mac 2021
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40454 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-40454?
CVE-2021-40454 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40454?
To fix CVE-2021-40454, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40454 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40454 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-40454?
CVE-2021-40454 affects Microsoft Windows 10 Version 1809, Microsoft Windows Server 2019, Microsoft Windows Server 2019 (Server Core installation), Microsoft Windows 10 Version 1909, Microsoft Windows 10 Version 21H1, Microsoft Windows Server 2022, Microsoft Windows 10 Version 2004, Microsoft Windows Server version 2004, Microsoft Windows 10 Version 20H2, Microsoft Windows Server version 20H2, Microsoft Windows 11 version 21H2, Microsoft Windows 10 Version 1507, Microsoft Windows 10 Version 1607, Microsoft Windows Server 2016, Microsoft Windows Server 2016 (Server Core installation), Microsoft Windows 8.1, Microsoft Windows Server 2012, Microsoft Windows Server 2012 (Server Core installation), Microsoft Windows Server 2012 R2, Microsoft Windows Server 2012 R2 (Server Core installation), Microsoft Microsoft Office 2019, Microsoft Microsoft Office 2019 for Mac, Microsoft Microsoft 365 Apps for Enterprise, Microsoft Microsoft Office 2016, Microsoft Microsoft Office 2013 Service Pack 1, Microsoft Microsoft Office LTSC 2021, Microsoft Microsoft Office LTSC for Mac 2021.
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