# KB4571709: August 2020 cumulative update for Windows 10 1803 KB4571709, released August 11, 2020, fixes 85 CVEs across 15 products. 2 of them are being exploited (CVE-2020-1464); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb4571709 - Platform: Microsoft - Released: Aug 11, 2020 - Priority: Patch now (Closes CVE-2020-1464, exploited (CISA KEV)) - CVEs: 85, exploited: 2, on CISA KEV: 2 - Vendor advisory: https://support.microsoft.com/help/4571709 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1803-for-32-bit-systems.md) | | 17134.1667 | | [Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1803-for-arm64-based-systems.md) | | 17134.1667 | | [Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1803-for-x64-based-systems.md) | | 17134.1667 | | [Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-10-version-1803-for-32-bit-systems.md) | | 17134.1667 | | [Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-10-version-1803-for-arm64-based-systems.md) | | 17134.1667 | | [Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1803 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-10-version-1803-for-x64-based-systems.md) | | 17134.1667 | | [Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-on-windows-10-version-1803-for-32-bit-systems.md) | | 17134.1667 | | [Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-on-windows-10-version-1803-for-arm64-based-systems.md) | | 17134.1667 | | [Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-on-windows-10-version-1803-for-x64-based-systems.md) | | 17134.1667 | | [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1803-for-32-bit-systems.md) | | 17134.1667 | | [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1803-for-arm64-based-systems.md) | | 17134.1667 | | [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1803-for-x64-based-systems.md) | | 17134.1667 | | [Windows 10 Version 1803 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1803-for-32-bit-systems.md) | | 17134.1667 | | [Windows 10 Version 1803 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1803-for-arm64-based-systems.md) | | 17134.1667 | | [Windows 10 Version 1803 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1803-for-x64-based-systems.md) | | 17134.1667 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2020-1464](https://patchblox.com/security/data/cve/CVE-2020-1464.md) | Patch now | Microsoft Windows | 5.3 | 0.3895 | CISA KEV, Disclosed | | [CVE-2020-1380](https://patchblox.com/security/data/cve/CVE-2020-1380.md) | Patch now | Microsoft Scripting Engine | 7.5 | 0.2419 | CISA KEV | | [CVE-2020-1570](https://patchblox.com/security/data/cve/CVE-2020-1570.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.0884 | More likely | | [CVE-2020-1555](https://patchblox.com/security/data/cve/CVE-2020-1555.md) | Urgent | Microsoft Scripting Engine | n/a | 0.0451 | | | [CVE-2020-1046](https://patchblox.com/security/data/cve/CVE-2020-1046.md) | Urgent | .NET Framework | n/a | 0.0376 | | | [CVE-2020-1567](https://patchblox.com/security/data/cve/CVE-2020-1567.md) | Urgent | Internet Explorer | 7.5 | 0.0367 | More likely | | [CVE-2020-1554](https://patchblox.com/security/data/cve/CVE-2020-1554.md) | Urgent | Windows Media | 8.0 | 0.0346 | | | [CVE-2020-1492](https://patchblox.com/security/data/cve/CVE-2020-1492.md) | Urgent | Microsoft Video Control | 7.8 | 0.0346 | | | [CVE-2020-1339](https://patchblox.com/security/data/cve/CVE-2020-1339.md) | Urgent | Windows Media | 7.3 | 0.0332 | | | [CVE-2020-1379](https://patchblox.com/security/data/cve/CVE-2020-1379.md) | Urgent | Windows Media | 7.8 | 0.0331 | | | [CVE-2020-1568](https://patchblox.com/security/data/cve/CVE-2020-1568.md) | Urgent | Microsoft Edge (HTML-based) | 4.2 | 0.0311 | | | [CVE-2020-1525](https://patchblox.com/security/data/cve/CVE-2020-1525.md) | Urgent | Windows Media | 7.8 | 0.0285 | | | [CVE-2020-1477](https://patchblox.com/security/data/cve/CVE-2020-1477.md) | Urgent | Windows Media Player | 7.8 | 0.0251 | | | [CVE-2020-1566](https://patchblox.com/security/data/cve/CVE-2020-1566.md) | Urgent | Microsoft Windows | n/a | 0.0168 | More likely | | [CVE-2020-1578](https://patchblox.com/security/data/cve/CVE-2020-1578.md) | Urgent | Windows Kernel | 5.5 | 0.0094 | More likely | | [CVE-2020-1480](https://patchblox.com/security/data/cve/CVE-2020-1480.md) | Urgent | Microsoft Windows | 7.8 | 0.0090 | More likely | | [CVE-2020-1529](https://patchblox.com/security/data/cve/CVE-2020-1529.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0090 | More likely | | [CVE-2020-1584](https://patchblox.com/security/data/cve/CVE-2020-1584.md) | Urgent | Microsoft Windows | 7.8 | 0.0090 | More likely | | [CVE-2020-1587](https://patchblox.com/security/data/cve/CVE-2020-1587.md) | Urgent | Microsoft Windows | 7.8 | 0.0086 | More likely | | [CVE-2020-1337](https://patchblox.com/security/data/cve/CVE-2020-1337.md) | High | Windows Print Spooler Components | 7.8 | 0.1418 | | | [CVE-2020-1561](https://patchblox.com/security/data/cve/CVE-2020-1561.md) | High | Microsoft Graphics Component | 7.8 | 0.0426 | | | [CVE-2020-1558](https://patchblox.com/security/data/cve/CVE-2020-1558.md) | High | Microsoft JET Database Engine | n/a | 0.0418 | | | [CVE-2020-1562](https://patchblox.com/security/data/cve/CVE-2020-1562.md) | High | Microsoft Graphics Component | 7.8 | 0.0403 | | | [CVE-2020-1564](https://patchblox.com/security/data/cve/CVE-2020-1564.md) | High | Microsoft JET Database Engine | n/a | 0.0403 | | | [CVE-2020-1557](https://patchblox.com/security/data/cve/CVE-2020-1557.md) | High | Microsoft JET Database Engine | n/a | 0.0393 | | | [CVE-2020-1378](https://patchblox.com/security/data/cve/CVE-2020-1378.md) | High | Windows Registry | 7.8 | 0.0386 | | | [CVE-2020-1509](https://patchblox.com/security/data/cve/CVE-2020-1509.md) | High | Microsoft Windows | 8.8 | 0.0326 | | | [CVE-2020-1473](https://patchblox.com/security/data/cve/CVE-2020-1473.md) | High | Microsoft JET Database Engine | 7.8 | 0.0280 | | | [CVE-2020-1478](https://patchblox.com/security/data/cve/CVE-2020-1478.md) | High | Windows Media Player | 7.8 | 0.0268 | | | [CVE-2020-1531](https://patchblox.com/security/data/cve/CVE-2020-1531.md) | High | Windows Shell | 7.8 | 0.0268 | | | [CVE-2020-1534](https://patchblox.com/security/data/cve/CVE-2020-1534.md) | High | Microsoft Windows | 7.8 | 0.0268 | | | [CVE-2020-1565](https://patchblox.com/security/data/cve/CVE-2020-1565.md) | High | Windows Shell | n/a | 0.0251 | | | [CVE-2020-1528](https://patchblox.com/security/data/cve/CVE-2020-1528.md) | High | Microsoft Windows | 7.8 | 0.0244 | | | [CVE-2020-1552](https://patchblox.com/security/data/cve/CVE-2020-1552.md) | High | Microsoft Windows | n/a | 0.0236 | | | [CVE-2020-1377](https://patchblox.com/security/data/cve/CVE-2020-1377.md) | High | Windows Registry | 7.8 | 0.0151 | | | [CVE-2020-1417](https://patchblox.com/security/data/cve/CVE-2020-1417.md) | High | Windows Kernel | 7.8 | 0.0144 | | | [CVE-2020-1548](https://patchblox.com/security/data/cve/CVE-2020-1548.md) | High | Windows Update Stack | 7.8 | 0.0118 | | | [CVE-2020-1476](https://patchblox.com/security/data/cve/CVE-2020-1476.md) | High | .NET Framework | n/a | 0.0113 | | | [CVE-2020-1470](https://patchblox.com/security/data/cve/CVE-2020-1470.md) | High | Microsoft Windows | 7.8 | 0.0113 | | | [CVE-2020-1530](https://patchblox.com/security/data/cve/CVE-2020-1530.md) | High | Microsoft Windows | 7.8 | 0.0101 | | | [CVE-2020-1522](https://patchblox.com/security/data/cve/CVE-2020-1522.md) | High | Windows AI | 7.8 | 0.0100 | | | [CVE-2020-1549](https://patchblox.com/security/data/cve/CVE-2020-1549.md) | High | Microsoft Windows | 7.8 | 0.0098 | | | [CVE-2020-1486](https://patchblox.com/security/data/cve/CVE-2020-1486.md) | High | Microsoft Windows | n/a | 0.0098 | | | [CVE-2020-1527](https://patchblox.com/security/data/cve/CVE-2020-1527.md) | High | Microsoft Windows | 7.8 | 0.0095 | | | [CVE-2020-1524](https://patchblox.com/security/data/cve/CVE-2020-1524.md) | High | Windows AI | 7.8 | 0.0093 | | | [CVE-2020-1556](https://patchblox.com/security/data/cve/CVE-2020-1556.md) | High | Windows WalletService | n/a | 0.0093 | | | [CVE-2020-1547](https://patchblox.com/security/data/cve/CVE-2020-1547.md) | High | Microsoft Windows | 7.8 | 0.0092 | | | [CVE-2020-1489](https://patchblox.com/security/data/cve/CVE-2020-1489.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1513](https://patchblox.com/security/data/cve/CVE-2020-1513.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1515](https://patchblox.com/security/data/cve/CVE-2020-1515.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1516](https://patchblox.com/security/data/cve/CVE-2020-1516.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1519](https://patchblox.com/security/data/cve/CVE-2020-1519.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1533](https://patchblox.com/security/data/cve/CVE-2020-1533.md) | High | Windows WalletService | 7.8 | 0.0091 | | | [CVE-2020-1535](https://patchblox.com/security/data/cve/CVE-2020-1535.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1539](https://patchblox.com/security/data/cve/CVE-2020-1539.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1540](https://patchblox.com/security/data/cve/CVE-2020-1540.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1541](https://patchblox.com/security/data/cve/CVE-2020-1541.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1544](https://patchblox.com/security/data/cve/CVE-2020-1544.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1545](https://patchblox.com/security/data/cve/CVE-2020-1545.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1546](https://patchblox.com/security/data/cve/CVE-2020-1546.md) | High | Microsoft Windows | 7.8 | 0.0091 | | | [CVE-2020-1520](https://patchblox.com/security/data/cve/CVE-2020-1520.md) | High | Microsoft Windows | 7.8 | 0.0090 | | | [CVE-2020-1479](https://patchblox.com/security/data/cve/CVE-2020-1479.md) | High | Windows Kernel | 7.0 | 0.0090 | | | [CVE-2020-1550](https://patchblox.com/security/data/cve/CVE-2020-1550.md) | High | Microsoft Windows | 7.8 | 0.0086 | | | [CVE-2020-1579](https://patchblox.com/security/data/cve/CVE-2020-1579.md) | High | Microsoft Windows | 7.8 | 0.0086 | | | [CVE-2020-1511](https://patchblox.com/security/data/cve/CVE-2020-1511.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1521](https://patchblox.com/security/data/cve/CVE-2020-1521.md) | High | Windows AI | 7.8 | 0.0080 | | | [CVE-2020-1526](https://patchblox.com/security/data/cve/CVE-2020-1526.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1536](https://patchblox.com/security/data/cve/CVE-2020-1536.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1537](https://patchblox.com/security/data/cve/CVE-2020-1537.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1538](https://patchblox.com/security/data/cve/CVE-2020-1538.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1542](https://patchblox.com/security/data/cve/CVE-2020-1542.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1543](https://patchblox.com/security/data/cve/CVE-2020-1543.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1551](https://patchblox.com/security/data/cve/CVE-2020-1551.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-1488](https://patchblox.com/security/data/cve/CVE-2020-1488.md) | High | Microsoft Windows | 7.8 | 0.0079 | | | [CVE-2020-1484](https://patchblox.com/security/data/cve/CVE-2020-1484.md) | High | Microsoft Windows | 7.8 | 0.0074 | | | [CVE-2020-1553](https://patchblox.com/security/data/cve/CVE-2020-1553.md) | High | Microsoft Windows | 7.8 | 0.0074 | | | [CVE-2020-1490](https://patchblox.com/security/data/cve/CVE-2020-1490.md) | High | Microsoft Windows | 7.0 | 0.0074 | | | [CVE-2020-1577](https://patchblox.com/security/data/cve/CVE-2020-1577.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0709 | | | [CVE-2020-1510](https://patchblox.com/security/data/cve/CVE-2020-1510.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0481 | | | [CVE-2020-1512](https://patchblox.com/security/data/cve/CVE-2020-1512.md) | Routine | Microsoft Windows | 5.5 | 0.0387 | | | [CVE-2020-1487](https://patchblox.com/security/data/cve/CVE-2020-1487.md) | Routine | Windows Media | 5.5 | 0.0357 | | | [CVE-2020-1569](https://patchblox.com/security/data/cve/CVE-2020-1569.md) | Routine | Microsoft Edge (HTML-based) | 4.2 | 0.0298 | | | [CVE-2020-1474](https://patchblox.com/security/data/cve/CVE-2020-1474.md) | Routine | Windows COM | 5.5 | 0.0148 | | | [CVE-2020-1383](https://patchblox.com/security/data/cve/CVE-2020-1383.md) | Routine | Microsoft Windows | 5.5 | 0.0113 | | | [CVE-2020-1485](https://patchblox.com/security/data/cve/CVE-2020-1485.md) | Routine | Microsoft Windows | 5.0 | 0.0113 | | --- Data as of 2026-11-09T13:31:49Z UTC. 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