CVE-2021-26411: Internet Explorer Memory Corruption Vulnerability
Published Mar 9, 2021
·Updated
Internet Explorer Memory Corruption Vulnerability
Other sources
Microsoft Internet Explorer contains an unspecified vulnerability that allows for memory corruption.
— CISA
Affected Software
69 affected componentsFixes available
Microsoft Internet Explorer
Microsoft Edge
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=1607
Microsoft Windows 10=1803
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows Server 2016
Microsoft Windows Server 2019
Microsoft Internet Explorer=11
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Internet Explorer=9
Microsoft Windows Server 2008=sp2
Microsoft Edge (EdgeHTML-based)<10.0.14393.4283
10.0.14393.4283
Microsoft Internet Explorer 11<10.0.17763.1817
10.0.17763.1817
Microsoft Internet Explorer 11<6.3.9600.19968
6.3.9600.19968
Microsoft Internet Explorer 11<10.0.17134.2087
10.0.17134.2087
Microsoft Internet Explorer 9<6.0.6003.21070
6.0.6003.21070
Microsoft Edge (EdgeHTML-based)<10.0.10240.18874
10.0.10240.18874
Microsoft Edge (EdgeHTML-based)<10.0.19043.867
10.0.19043.867
Microsoft Edge (EdgeHTML-based)<10.0.18363.1440
10.0.18363.1440
Microsoft Edge (EdgeHTML-based)<10.0.17763.1817
10.0.17763.1817
Microsoft Internet Explorer 11<6.1.7601.24566
6.1.7601.24566
Microsoft Internet Explorer 11<10.0.14393.4283
10.0.14393.4283
Microsoft Internet Explorer 11<10.0.19043.867
10.0.19043.867
Microsoft Internet Explorer 11<10.0.10240.18874
10.0.10240.18874
Microsoft Internet Explorer 11<10.0.18363.1440
10.0.18363.1440
Microsoft Edge (EdgeHTML-based)<10.0.17134.2087
10.0.17134.2087
Microsoft Internet Explorer 11<6.2.9200.23298
6.2.9200.23298
Microsoft Internet Explorer 11<6.3.9600.19968
6.3.9600.19968
All of the following
Microsoft Edge
Any of the following
Microsoft Windows 10 1507
Microsoft Windows 10 1607
Microsoft Windows 10 1803
Microsoft Windows 10 1809
Microsoft Windows 10 1903
Microsoft Windows 10 1903
Microsoft Windows 10 1909
Microsoft Windows 10 2004
Microsoft Windows 10 20h2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
All of the following
Microsoft Internet Explorer=11
Any of the following
Microsoft Windows 10 1507
Microsoft Windows 10 1607
Microsoft Windows 10 1803
Microsoft Windows 10 1809
Microsoft Windows 10 1903
Microsoft Windows 10 1903
Microsoft Windows 10 1909
Microsoft Windows 10 2004
Microsoft Windows 10 20h2
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
All of the following
Microsoft Internet Explorer=9
Microsoft Windows Server 2008=sp2
Remediation
Event History
Mar 9, 2021
CVE Published
via Microsoft·04:00 PM
Known Exploited
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:00 PM
Affected Software
Updated
via Microsoft·04:00 PM
Description
Mar 11, 2021
CVE Published
via MITRE·03:07 PM
Data Sourced
via MITRE·03:07 PM
DescriptionSeverity
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Nov 3, 2021
Known Ransomware
via CISA·12:00 AM
Frequently Asked Questions
1
What is CVE-2021-26411?
CVE-2021-26411 is an unspecified vulnerability in Microsoft Internet Explorer that allows for memory corruption.
2
Who is affected by CVE-2021-26411?
Users of Microsoft Internet Explorer versions 9, 11, and Microsoft Edge are affected by CVE-2021-26411.
3
What is the severity of CVE-2021-26411?
CVE-2021-26411 has a severity rating of 7.5 (High).
4
How can I protect myself from CVE-2021-26411?
To protect yourself from CVE-2021-26411, make sure to keep your Microsoft Internet Explorer or Microsoft Edge browser up to date with the latest security patches.
5
Where can I find more information about CVE-2021-26411?
You can find more information about CVE-2021-26411 on the Microsoft Security Guidance Advisory page: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26411