CVE-2021-33742
Windows MSHTML Platform Remote Code Execution Vulnerability
CVE-2021-33742 is fixed in 30 products on 1 platform, first by KB5003638, released June 8, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021. Patch Radar priority: Patch now.
Patch nowCISA KEV
CVSS
7.5
Critical
Exploitation
Exploited
Reported by the vendor
CISA KEV
Nov 3, 2021
Federal due date Nov 17, 2021
EPSS
0.5941
99th percentile
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.4467 | KB5003638 | Jun 8, 2021 |
| Windows 10 Version 1607 for x64-based Systems | 14393.4467 | KB5003638 | Jun 8, 2021 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.1999 | KB5003646 | Jun 8, 2021 |
| Windows 10 Version 1809 for ARM64-based Systems | 17763.1999 | KB5003646 | Jun 8, 2021 |
| Windows 10 Version 1809 for x64-based Systems | 17763.1999 | KB5003646 | Jun 8, 2021 |
| Windows 10 Version 1909 for 32-bit Systems | 18363.1621 | KB5003635 | Jun 8, 2021 |
| Windows 10 Version 1909 for ARM64-based Systems | 18363.1621 | KB5003635 | Jun 8, 2021 |
| Windows 10 Version 1909 for x64-based Systems | 18363.1621 | KB5003635 | Jun 8, 2021 |
| Windows 10 Version 2004 for 32-bit Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 2004 for ARM64-based Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 2004 for x64-based Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 20H2 for 32-bit Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 20H2 for ARM64-based Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 21H1 for 32-bit Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 21H1 for ARM64-based Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 Version 21H1 for x64-based Systems | KB5003637 | Jun 8, 2021 | |
| Windows 10 for 32-bit Systems | 10240.18967 | KB5003687 | Jun 8, 2021 |
| Windows 10 for x64-based Systems | 10240.18967 | KB5003687 | Jun 8, 2021 |
| Windows 7 for 32-bit Systems Service Pack 1 | KB5003636 | Jun 8, 2021 | |
| Windows 7 for 32-bit Systems Service Pack 1 | KB5003667 | Jun 8, 2021 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB5003636 | Jun 8, 2021 | |
| Windows 7 for x64-based Systems Service Pack 1 | KB5003667 | Jun 8, 2021 | |
| Windows 8.1 for 32-bit systems | KB5003671 | Jun 8, 2021 | |
| Windows 8.1 for 32-bit systems | KB5003636 | Jun 8, 2021 | |
| Windows 8.1 for x64-based systems | KB5003671 | Jun 8, 2021 | |
| Windows 8.1 for x64-based systems | KB5003636 | Jun 8, 2021 | |
| Windows RT 8.1 | KB5003671 | Jun 8, 2021 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5003636 | Jun 8, 2021 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5003667 | Jun 8, 2021 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5003661 | Jun 8, 2021 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5003636 | Jun 8, 2021 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5003661 | Jun 8, 2021 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5003636 | Jun 8, 2021 | |
| Windows Server 2012 | KB5003636 | Jun 8, 2021 | |
| Windows Server 2012 | KB5003697 | Jun 8, 2021 | |
| Windows Server 2012 R2 | KB5003671 | Jun 8, 2021 | |
| Windows Server 2012 R2 | KB5003636 | Jun 8, 2021 | |
| Windows Server 2016 | 14393.4467 | KB5003638 | Jun 8, 2021 |
| Windows Server 2019 | 17763.1999 | KB5003646 | Jun 8, 2021 |
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