Issued: Thursday, 11 November, 2021 |
Last Revision: Thursday, 11 November, 2021 |
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Microsoft has released 55 security fixes for software including patches that resolve zero-day vulnerabilities actively exploited in the wild. Its includes fixes for six critical vulnerabilities, 15 remote code execution (RCE) bugs, information leaks, and elevation of privilege security flaws, as well as issues that could lead to spoofing and tampering.
Some notable vulnerabilities in this update are:
CVE-2021-42321-Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-42292-Microsoft Excel Security Feature Bypass Vulnerability
CVE-2021-43209-3D Viewer Remote Code Execution Vulnerability
CVE-2021-43208-3D Viewer Remote Code Execution Vulnerability
CVE-2021-38631-Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
CVE-2021-41371-Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
CVE/Vulnerability | Description | CVSS 3.1 Score |
CVE-2021-42321 | Microsoft Exchange Server Remote Code Execution Vulnerability | 8.8 |
CVE-2021-42292 | Microsoft Excel Security Feature Bypass Vulnerability | 7.8 |
CVE-2021-43209 | 3D Viewer Remote Code Execution Vulnerability | 7.8 |
CVE-2021-43208 | 3D Viewer Remote Code Execution Vulnerability | 7.8 |
CVE-2021-38631 | Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability | 4.4 |
CVE-2021-41371 | Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability | 4.4 |
Table 1: Vulnerability details
CVE/Vulnerability | Affected Product(s) |
CVE-2021-42321 | Microsoft Exchange Server 2019 Cumulative Update 11 Microsoft Exchange Server 2016 Cumulative Update 22 Microsoft Exchange Server 2019 Cumulative Update 10 Microsoft Exchange Server 2016 Cumulative Update 21 |
CVE-2021-42292 | Microsoft Office 2013 Service Pack 1 (64-bit editions) Microsoft Office 2013 Service Pack 1 (32-bit editions) Microsoft Office 2013 RT Service Pack 1 Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2013 RT Service Pack 1 Microsoft Excel 2013 RT Service Pack 1 Microsoft Office 2016 (64-bit edition) Microsoft Office 2016 (32-bit edition) Microsoft Excel 2016 (64-bit edition) Microsoft Excel 2016 (64-bit edition) Microsoft Excel 2016 (32-bit edition) Microsoft Excel 2016 (32-bit edition) Microsoft Office LTSC 2021 for 32-bit editions Microsoft Office LTSC 2021 for 64-bit editions Microsoft Office LTSC for Mac 2021 Microsoft 365 Apps for Enterprise for 64-bit Systems Microsoft 365 Apps for Enterprise for 32-bit Systems Microsoft Office 2019 for Mac Microsoft Office 2019 for 64-bit editions Microsoft Office 2019 for 32-bit editions |
CVE-2021-43209 | 3D Viewer |
CVE-2021-43208 | 3D Viewer |
CVE-2021-38631 | Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 R2 Windows Server 2012 (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 Windows Server 2012 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 Windows RT 8.1 Windows 8.1 for x64-based systems Windows 8.1 for x64-based systems Windows 8.1 for 32-bit systems Windows 8.1 for 32-bit systems Windows 7 for x64-based Systems Service Pack 1 Windows 7 for x64-based Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows Server 2016 (Server Core installation) Windows Server 2016 Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems Windows 10 for x64-based Systems Windows 10 for 32-bit Systems Windows 11 for ARM64-based Systems Windows 11 for x64-based Systems Windows Server, version 20H2 (Server Core Installation) Windows 10 Version 20H2 for ARM64-based Systems Windows 10 Version 20H2 for 32-bit Systems Windows 10 Version 20H2 for x64-based Systems Windows Server, version 2004 (Server Core installation) Windows 10 Version 2004 for x64-based Systems Windows 10 Version 2004 for ARM64-based Systems Windows 10 Version 2004 for 32-bit Systems Windows Server 2022 (Server Core installation) Windows Server 2022 Windows 10 Version 21H1 for 32-bit Systems Windows 10 Version 21H1 for ARM64-based Systems Windows 10 Version 21H1 for x64-based Systems Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1909 for x64-based Systems Windows 10 Version 1909 for 32-bit Systems Windows Server 2019 (Server Core installation) Windows Server 2019 Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for 32-bit Systems |
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CVE-2021-41371 | Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 R2 Windows Server 2012 (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 Windows Server 2012 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 Windows RT 8.1 Windows 8.1 for x64-based systems Windows 8.1 for x64-based systems Windows 8.1 for 32-bit systems Windows 8.1 for 32-bit systems Windows 7 for x64-based Systems Service Pack 1 Windows 7 for x64-based Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows Server 2016 (Server Core installation) Windows Server 2016 Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems Windows 10 for x64-based Systems Windows 10 for 32-bit Systems Windows 11 for ARM64-based Systems Windows 11 for x64-based Systems Windows Server, version 20H2 (Server Core Installation) Windows 10 Version 20H2 for ARM64-based Systems Windows 10 Version 20H2 for 32-bit Systems Windows 10 Version 20H2 for x64-based Systems Windows Server, version 2004 (Server Core installation) Windows 10 Version 2004 for x64-based Systems Windows 10 Version 2004 for ARM64-based Systems Windows 10 Version 2004 for 32-bit Systems Windows Server 2022 (Server Core installation) Windows Server 2022 Windows 10 Version 21H1 for 32-bit Systems Windows 10 Version 21H1 for ARM64-based Systems Windows 10 Version 21H1 for x64-based Systems Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1909 for x64-based Systems Windows 10 Version 1909 for 32-bit Systems Windows Server 2019 (Server Core installation) Windows Server 2019 Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for 32-bit Systems |
Table 2: Vulnerable versions
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Organizations are strongly recommended to apply patches as soon as possible, particularly patches for exploited zero day, and critical vulnerabilities.