# KB4586830: November 2020 cumulative update for Windows 10 1607 KB4586830, released November 10, 2020, fixes 47 CVEs across 10 products. One of them is being exploited (CVE-2020-17087); 1 on CISA KEV. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/fix/microsoft/kb4586830 - Platform: Microsoft - Released: Nov 10, 2020 - Priority: Patch now (Closes CVE-2020-17087, exploited (CISA KEV)) - CVEs: 47, exploited: 1, on CISA KEV: 1 - Vendor advisory: https://support.microsoft.com/help/4586830 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1607-for-32-bit-systems.md) | | 14393.4046 | | [Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1607-for-x64-based-systems.md) | | 14393.4046 | | [Internet Explorer 11 on Windows Server 2016](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2016.md) | | 14393.4046 | | [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1607-for-32-bit-systems.md) | | 14393.4046 | | [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1607-for-x64-based-systems.md) | | 14393.4046 | | [Microsoft Edge (EdgeHTML-based) on Windows Server 2016](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-server-2016.md) | | 14393.4046 | | [Windows 10 Version 1607 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1607-for-32-bit-systems.md) | | 14393.4046 | | [Windows 10 Version 1607 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1607-for-x64-based-systems.md) | | 14393.4046 | | [Windows Server 2016](https://patchblox.com/security/data/product/microsoft/windows-server-2016.md) | | 14393.4046 | | [Windows Server 2016 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2016-server-core-installation.md) | | 14393.4046 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2020-17087](https://patchblox.com/security/data/cve/CVE-2020-17087.md) | Patch now | Windows Kernel | 7.8 | 0.0543 | CISA KEV, Disclosed | | [CVE-2020-17051](https://patchblox.com/security/data/cve/CVE-2020-17051.md) | Urgent | Microsoft Windows | 9.8 | 0.1062 | More likely | | [CVE-2020-17042](https://patchblox.com/security/data/cve/CVE-2020-17042.md) | Urgent | Microsoft Windows | 8.8 | 0.0511 | | | [CVE-2020-17058](https://patchblox.com/security/data/cve/CVE-2020-17058.md) | Urgent | Microsoft Browsers | 7.5 | 0.0309 | | | [CVE-2020-17052](https://patchblox.com/security/data/cve/CVE-2020-17052.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.0265 | More likely | | [CVE-2020-17057](https://patchblox.com/security/data/cve/CVE-2020-17057.md) | Urgent | Microsoft Windows | 7.0 | 0.0187 | More likely | | [CVE-2020-17048](https://patchblox.com/security/data/cve/CVE-2020-17048.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.0165 | | | [CVE-2020-17056](https://patchblox.com/security/data/cve/CVE-2020-17056.md) | Urgent | Microsoft Windows | 5.5 | 0.0131 | More likely | | [CVE-2020-17038](https://patchblox.com/security/data/cve/CVE-2020-17038.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0100 | More likely | | [CVE-2020-17088](https://patchblox.com/security/data/cve/CVE-2020-17088.md) | Urgent | Windows Common Log File System Driver | 7.8 | 0.0088 | More likely | | [CVE-2020-16998](https://patchblox.com/security/data/cve/CVE-2020-16998.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0085 | More likely | | [CVE-2020-17047](https://patchblox.com/security/data/cve/CVE-2020-17047.md) | High | Microsoft Windows | 7.5 | 0.2710 | | | [CVE-2020-16997](https://patchblox.com/security/data/cve/CVE-2020-16997.md) | High | Microsoft Windows | 7.7 | 0.0403 | | | [CVE-2020-17043](https://patchblox.com/security/data/cve/CVE-2020-17043.md) | High | Microsoft Windows | 7.8 | 0.0285 | | | [CVE-2020-17044](https://patchblox.com/security/data/cve/CVE-2020-17044.md) | High | Microsoft Windows | 7.8 | 0.0285 | | | [CVE-2020-17055](https://patchblox.com/security/data/cve/CVE-2020-17055.md) | High | Microsoft Windows | 7.8 | 0.0285 | | | [CVE-2020-17035](https://patchblox.com/security/data/cve/CVE-2020-17035.md) | High | Windows Kernel | 7.8 | 0.0142 | | | [CVE-2020-17011](https://patchblox.com/security/data/cve/CVE-2020-17011.md) | High | Microsoft Windows | 7.8 | 0.0104 | | | [CVE-2020-17001](https://patchblox.com/security/data/cve/CVE-2020-17001.md) | High | Microsoft Windows | 7.8 | 0.0100 | | | [CVE-2020-17024](https://patchblox.com/security/data/cve/CVE-2020-17024.md) | High | Microsoft Windows | 7.8 | 0.0099 | | | [CVE-2020-17041](https://patchblox.com/security/data/cve/CVE-2020-17041.md) | High | Microsoft Windows | 7.8 | 0.0099 | | | [CVE-2020-17037](https://patchblox.com/security/data/cve/CVE-2020-17037.md) | High | Windows WalletService | 7.8 | 0.0098 | | | [CVE-2020-17068](https://patchblox.com/security/data/cve/CVE-2020-17068.md) | High | Microsoft Graphics Component | 7.8 | 0.0098 | | | [CVE-2020-17014](https://patchblox.com/security/data/cve/CVE-2020-17014.md) | High | Microsoft Windows | 7.8 | 0.0095 | | | [CVE-2020-17026](https://patchblox.com/security/data/cve/CVE-2020-17026.md) | High | Microsoft Windows | 7.8 | 0.0093 | | | [CVE-2020-17027](https://patchblox.com/security/data/cve/CVE-2020-17027.md) | High | Microsoft Windows | 7.8 | 0.0092 | | | [CVE-2020-17031](https://patchblox.com/security/data/cve/CVE-2020-17031.md) | High | Microsoft Windows | 7.8 | 0.0092 | | | [CVE-2020-17034](https://patchblox.com/security/data/cve/CVE-2020-17034.md) | High | Microsoft Windows | 7.8 | 0.0092 | | | [CVE-2020-17025](https://patchblox.com/security/data/cve/CVE-2020-17025.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-17028](https://patchblox.com/security/data/cve/CVE-2020-17028.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-17032](https://patchblox.com/security/data/cve/CVE-2020-17032.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-17033](https://patchblox.com/security/data/cve/CVE-2020-17033.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-17007](https://patchblox.com/security/data/cve/CVE-2020-17007.md) | High | Microsoft Windows | 7.0 | 0.0076 | | | [CVE-2020-17075](https://patchblox.com/security/data/cve/CVE-2020-17075.md) | High | Windows Update Stack | 7.8 | 0.0073 | | | [CVE-2020-1599](https://patchblox.com/security/data/cve/CVE-2020-1599.md) | Routine | Microsoft Windows | 5.5 | 0.1912 | | | [CVE-2020-17040](https://patchblox.com/security/data/cve/CVE-2020-17040.md) | Routine | Microsoft Windows | 6.5 | 0.0270 | | | [CVE-2020-17054](https://patchblox.com/security/data/cve/CVE-2020-17054.md) | Routine | Microsoft Scripting Engine | 4.2 | 0.0207 | | | [CVE-2020-17113](https://patchblox.com/security/data/cve/CVE-2020-17113.md) | Routine | Microsoft Windows Codecs Library | 5.5 | 0.0149 | | | [CVE-2020-17046](https://patchblox.com/security/data/cve/CVE-2020-17046.md) | Routine | Microsoft Windows | 5.5 | 0.0148 | | | [CVE-2020-17029](https://patchblox.com/security/data/cve/CVE-2020-17029.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0139 | | | [CVE-2020-17036](https://patchblox.com/security/data/cve/CVE-2020-17036.md) | Routine | Microsoft Windows | 5.5 | 0.0139 | | | [CVE-2020-17045](https://patchblox.com/security/data/cve/CVE-2020-17045.md) | Routine | Microsoft Windows | 5.5 | 0.0139 | | | [CVE-2020-16999](https://patchblox.com/security/data/cve/CVE-2020-16999.md) | Routine | Windows WalletService | 5.5 | 0.0131 | | | [CVE-2020-17000](https://patchblox.com/security/data/cve/CVE-2020-17000.md) | Routine | Microsoft Windows | 5.5 | 0.0131 | | | [CVE-2020-17004](https://patchblox.com/security/data/cve/CVE-2020-17004.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0131 | | | [CVE-2020-17069](https://patchblox.com/security/data/cve/CVE-2020-17069.md) | Routine | Windows NDIS | 5.5 | 0.0111 | | | [CVE-2020-17071](https://patchblox.com/security/data/cve/CVE-2020-17071.md) | Routine | Windows Update Stack | 5.5 | 0.0111 | | --- Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.