# KB4525243: November 2019 security update KB4525243, released November 12, 2019, fixes 39 CVEs across 9 products. 3 of them are being exploited (CVE-2019-1429); 3 on CISA KEV. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/fix/microsoft/kb4525243 - Platform: Microsoft - Released: Nov 12, 2019 - Priority: Patch now (Closes CVE-2019-1429, exploited (CISA KEV)) - CVEs: 39, exploited: 3, on CISA KEV: 3 - Vendor advisory: https://support.microsoft.com/help/4525243 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Internet Explorer 11 on Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-8.1-for-32-bit-systems.md) | | | | [Internet Explorer 11 on Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-8.1-for-x64-based-systems.md) | | | | [Internet Explorer 11 on Windows RT 8.1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-rt-8.1.md) | | | | [Internet Explorer 11 on Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2012-r2.md) | | | | [Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-32-bit-systems.md) | | | | [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) | | | | [Windows RT 8.1](https://patchblox.com/security/data/product/microsoft/windows-rt-8.1.md) | | | | [Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2.md) | | | | [Windows Server 2012 R2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2019-1429](https://patchblox.com/security/data/cve/CVE-2019-1429.md) | Patch now | Microsoft Scripting Engine | 6.4 | 0.7729 | CISA KEV | | [CVE-2019-1405](https://patchblox.com/security/data/cve/CVE-2019-1405.md) | Patch now | Microsoft Windows | 7.8 | 0.3017 | CISA KEV, Ransomware | | [CVE-2019-1388](https://patchblox.com/security/data/cve/CVE-2019-1388.md) | Patch now | Microsoft Windows | 7.8 | 0.0859 | CISA KEV, Ransomware | | [CVE-2019-1419](https://patchblox.com/security/data/cve/CVE-2019-1419.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.1161 | | | [CVE-2019-0719](https://patchblox.com/security/data/cve/CVE-2019-0719.md) | Urgent | Windows Hyper-V | 8.0 | 0.1142 | | | [CVE-2019-1390](https://patchblox.com/security/data/cve/CVE-2019-1390.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.0777 | More likely | | [CVE-2019-1389](https://patchblox.com/security/data/cve/CVE-2019-1389.md) | Urgent | Windows Hyper-V | 7.6 | 0.0489 | | | [CVE-2019-1397](https://patchblox.com/security/data/cve/CVE-2019-1397.md) | Urgent | Windows Hyper-V | 7.6 | 0.0489 | | | [CVE-2019-1393](https://patchblox.com/security/data/cve/CVE-2019-1393.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0142 | More likely | | [CVE-2019-1408](https://patchblox.com/security/data/cve/CVE-2019-1408.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0142 | More likely | | [CVE-2019-1394](https://patchblox.com/security/data/cve/CVE-2019-1394.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0121 | More likely | | [CVE-2019-1395](https://patchblox.com/security/data/cve/CVE-2019-1395.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0121 | More likely | | [CVE-2019-1396](https://patchblox.com/security/data/cve/CVE-2019-1396.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0121 | More likely | | [CVE-2019-1435](https://patchblox.com/security/data/cve/CVE-2019-1435.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0093 | More likely | | [CVE-2019-1438](https://patchblox.com/security/data/cve/CVE-2019-1438.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0089 | More likely | | [CVE-2019-1456](https://patchblox.com/security/data/cve/CVE-2019-1456.md) | High | Graphic Fonts | 7.8 | 0.0970 | | | [CVE-2019-1384](https://patchblox.com/security/data/cve/CVE-2019-1384.md) | High | Microsoft Windows | 8.5 | 0.0699 | | | [CVE-2019-1424](https://patchblox.com/security/data/cve/CVE-2019-1424.md) | High | Microsoft Windows | 8.1 | 0.0307 | | | [CVE-2019-1422](https://patchblox.com/security/data/cve/CVE-2019-1422.md) | High | Microsoft Windows | 7.8 | 0.0207 | | | [CVE-2019-1382](https://patchblox.com/security/data/cve/CVE-2019-1382.md) | High | Microsoft Windows | 7.8 | 0.0123 | | | [CVE-2019-1433](https://patchblox.com/security/data/cve/CVE-2019-1433.md) | High | Microsoft Graphics Component | 7.0 | 0.0094 | | | [CVE-2019-1407](https://patchblox.com/security/data/cve/CVE-2019-1407.md) | High | Microsoft Graphics Component | 7.8 | 0.0093 | | | [CVE-2019-1392](https://patchblox.com/security/data/cve/CVE-2019-1392.md) | High | Windows Kernel | 7.0 | 0.0089 | | | [CVE-2019-1434](https://patchblox.com/security/data/cve/CVE-2019-1434.md) | High | Microsoft Graphics Component | 7.0 | 0.0089 | | | [CVE-2019-1415](https://patchblox.com/security/data/cve/CVE-2019-1415.md) | High | Microsoft Windows | 7.8 | 0.0084 | | | [CVE-2019-1380](https://patchblox.com/security/data/cve/CVE-2019-1380.md) | High | Microsoft Windows | 7.8 | 0.0081 | | | [CVE-2019-1439](https://patchblox.com/security/data/cve/CVE-2019-1439.md) | Routine | Microsoft Graphics Component | 4.7 | 0.7479 | | | [CVE-2019-1406](https://patchblox.com/security/data/cve/CVE-2019-1406.md) | Routine | Microsoft JET Database Engine | 6.7 | 0.1329 | | | [CVE-2019-1432](https://patchblox.com/security/data/cve/CVE-2019-1432.md) | Routine | Microsoft Graphics Component | 4.4 | 0.0558 | | | [CVE-2019-0712](https://patchblox.com/security/data/cve/CVE-2019-0712.md) | Routine | Windows Hyper-V | 5.8 | 0.0555 | | | [CVE-2019-1411](https://patchblox.com/security/data/cve/CVE-2019-1411.md) | Routine | Microsoft Graphics Component | 4.4 | 0.0523 | | | [CVE-2019-11135](https://patchblox.com/security/data/cve/CVE-2019-11135.md) | Routine | Windows Kernel | 6.5 | 0.0313 | | | [CVE-2019-1418](https://patchblox.com/security/data/cve/CVE-2019-1418.md) | Routine | Microsoft Windows | 3.5 | 0.0175 | | | [CVE-2019-1399](https://patchblox.com/security/data/cve/CVE-2019-1399.md) | Routine | Windows Hyper-V | 5.4 | 0.0171 | | | [CVE-2019-1412](https://patchblox.com/security/data/cve/CVE-2019-1412.md) | Routine | Microsoft Graphics Component | 5.0 | 0.0170 | | | [CVE-2019-1381](https://patchblox.com/security/data/cve/CVE-2019-1381.md) | Routine | Microsoft Windows | 6.6 | 0.0156 | | | [CVE-2019-1409](https://patchblox.com/security/data/cve/CVE-2019-1409.md) | Routine | Microsoft RPC | 5.5 | 0.0140 | | | [CVE-2019-1391](https://patchblox.com/security/data/cve/CVE-2019-1391.md) | Routine | Microsoft Windows | 5.5 | 0.0132 | | | [CVE-2018-12207](https://patchblox.com/security/data/cve/CVE-2018-12207.md) | Routine | Microsoft Windows | 6.5 | 0.0092 | | --- Data as of 2026-11-08T19:12:23Z UTC. 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