CVE-2021-26411
Internet Explorer Memory Corruption Vulnerability
CVE-2021-26411 is fixed in 56 products on 1 platform, first by KB5000803, released March 9, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, with known ransomware use. Patch Radar priority: Patch now.
Patch nowCISA KEVKnown ransomware usePublicly disclosed
CVSS
8.8
Critical
Exploitation
Exploited
Reported by the vendor
CISA KEV
Nov 3, 2021
Federal due date Nov 17, 2021. Known ransomware use
EPSS
0.8167
99th percentile
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems | 14393.4283 | KB5000803 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems | 14393.4283 | KB5000803 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems | 17134.2087 | KB5000809 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems | 17134.2087 | KB5000809 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems | 17134.2087 | KB5000809 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 1909 for x64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 Version 2004 for 32-bit Systems | KB5000802 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 10 Version 2004 for ARM64-based Systems | KB5000802 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 10 Version 2004 for x64-based Systems | KB5000802 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 10 Version 20H2 for 32-bit Systems | KB5000802 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 10 Version 20H2 for ARM64-based Systems | KB5000802 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 10 Version 20H2 for x64-based Systems | KB5000802 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 10 for 32-bit Systems | 10240.18874 | KB5000807 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 10 for x64-based Systems | 10240.18874 | KB5000807 | Mar 9, 2021 |
| Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 | KB5000841 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 | KB5000841 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 8.1 for 32-bit systems | KB5000848 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 8.1 for 32-bit systems | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 8.1 for x64-based systems | KB5000848 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows 8.1 for x64-based systems | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows RT 8.1 | KB5000848 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5000841 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2012 | KB5000847 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2012 | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2012 R2 | KB5000848 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2012 R2 | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 11 on Windows Server 2016 | 14393.4283 | KB5000803 | Mar 9, 2021 |
| Internet Explorer 11 on Windows Server 2019 | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5000844 | Mar 9, 2021 | |
| Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5000800 | Mar 9, 2021 | |
| Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB5000844 | Mar 9, 2021 | |
| Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB5000800 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems | 14393.4283 | KB5000803 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems | 14393.4283 | KB5000803 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems | 17134.2087 | KB5000809 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems | 17134.2087 | KB5000809 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems | 17134.2087 | KB5000809 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems | 17763.1817 | KB5000822 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems | 18363.1440 | KB5000808 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for 32-bit Systems | KB5000802 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for ARM64-based Systems | KB5000802 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for x64-based Systems | KB5000802 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for 32-bit Systems | KB5000802 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for ARM64-based Systems | KB5000802 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for x64-based Systems | KB5000802 | Mar 9, 2021 | |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems | 10240.18874 | KB5000807 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems | 10240.18874 | KB5000807 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2016 | 14393.4283 | KB5000803 | Mar 9, 2021 |
| Microsoft Edge (EdgeHTML-based) on Windows Server 2019 | 17763.1817 | KB5000822 | Mar 9, 2021 |
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