# KB4493471: April 2019 security update KB4493471, released April 9, 2019, fixes 33 CVEs across 7 products. 2 of them are being exploited (CVE-2019-0803); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb4493471 - Platform: Microsoft - Released: Apr 9, 2019 - Priority: Patch now (Closes CVE-2019-0803, exploited (CISA KEV, ransomware)) - CVEs: 33, exploited: 2, on CISA KEV: 2 - Vendor advisory: https://support.microsoft.com/help/4493471 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/internet-explorer-9-on-windows-server-2008-for-32-bit-systems-service-pack-2.md) | | | | [Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/internet-explorer-9-on-windows-server-2008-for-x64-based-systems-service-pack-2.md) | | | | [Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2.md) | | | | [Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2-server-core-installation.md) | | | | [Windows Server 2008 for Itanium-Based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-itanium-based-systems-service-pack-2.md) | | | | [Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2.md) | | | | [Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2019-0803](https://patchblox.com/security/data/cve/CVE-2019-0803.md) | Patch now | Microsoft Graphics Component | 7.0 | 0.4523 | CISA KEV, Ransomware | | [CVE-2019-0859](https://patchblox.com/security/data/cve/CVE-2019-0859.md) | Patch now | Windows Kernel | 7.8 | 0.0419 | CISA KEV, Ransomware | | [CVE-2019-0853](https://patchblox.com/security/data/cve/CVE-2019-0853.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.3005 | | | [CVE-2019-0795](https://patchblox.com/security/data/cve/CVE-2019-0795.md) | Urgent | Microsoft XML | 7.8 | 0.2132 | | | [CVE-2019-0791](https://patchblox.com/security/data/cve/CVE-2019-0791.md) | Urgent | Microsoft XML | 7.8 | 0.1818 | | | [CVE-2019-0792](https://patchblox.com/security/data/cve/CVE-2019-0792.md) | Urgent | Microsoft XML | 7.8 | 0.1818 | | | [CVE-2019-0793](https://patchblox.com/security/data/cve/CVE-2019-0793.md) | Urgent | Microsoft XML | 7.8 | 0.1818 | More likely | | [CVE-2019-0794](https://patchblox.com/security/data/cve/CVE-2019-0794.md) | Urgent | Microsoft Windows | 7.8 | 0.1548 | More likely | | [CVE-2019-0845](https://patchblox.com/security/data/cve/CVE-2019-0845.md) | Urgent | Microsoft Windows | 7.5 | 0.1481 | | | [CVE-2019-0731](https://patchblox.com/security/data/cve/CVE-2019-0731.md) | Urgent | Microsoft Windows | 6.8 | 0.0435 | More likely | | [CVE-2019-0730](https://patchblox.com/security/data/cve/CVE-2019-0730.md) | Urgent | Microsoft Windows | 6.7 | 0.0435 | More likely | | [CVE-2019-0836](https://patchblox.com/security/data/cve/CVE-2019-0836.md) | Urgent | Microsoft Windows | 7.0 | 0.0430 | More likely | | [CVE-2019-0796](https://patchblox.com/security/data/cve/CVE-2019-0796.md) | Urgent | Microsoft Windows | 6.3 | 0.0424 | More likely | | [CVE-2019-0732](https://patchblox.com/security/data/cve/CVE-2019-0732.md) | Urgent | Microsoft Windows | 5.3 | 0.0378 | More likely | | [CVE-2019-0735](https://patchblox.com/security/data/cve/CVE-2019-0735.md) | Urgent | CSRSS | 7.0 | 0.0366 | More likely | | [CVE-2019-0805](https://patchblox.com/security/data/cve/CVE-2019-0805.md) | Urgent | Microsoft Windows | 6.7 | 0.0279 | More likely | | [CVE-2019-0844](https://patchblox.com/security/data/cve/CVE-2019-0844.md) | Urgent | Windows Kernel | 5.5 | 0.0213 | More likely | | [CVE-2019-0674](https://patchblox.com/security/data/cve/CVE-2019-0674.md) | High | Microsoft Office | 7.8 | 0.1841 | | | [CVE-2019-0846](https://patchblox.com/security/data/cve/CVE-2019-0846.md) | High | Microsoft JET Database Engine | 7.8 | 0.1612 | | | [CVE-2019-0847](https://patchblox.com/security/data/cve/CVE-2019-0847.md) | High | Microsoft JET Database Engine | 7.8 | 0.1612 | | | [CVE-2019-0851](https://patchblox.com/security/data/cve/CVE-2019-0851.md) | High | Microsoft JET Database Engine | 7.8 | 0.1612 | | | [CVE-2019-0671](https://patchblox.com/security/data/cve/CVE-2019-0671.md) | High | Microsoft Office | 7.8 | 0.1482 | | | [CVE-2019-0673](https://patchblox.com/security/data/cve/CVE-2019-0673.md) | High | Microsoft Office | 7.8 | 0.1482 | | | [CVE-2019-0879](https://patchblox.com/security/data/cve/CVE-2019-0879.md) | High | Microsoft JET Database Engine | 7.8 | 0.0979 | | | [CVE-2019-0877](https://patchblox.com/security/data/cve/CVE-2019-0877.md) | High | Microsoft JET Database Engine | 7.8 | 0.0495 | | | [CVE-2019-0856](https://patchblox.com/security/data/cve/CVE-2019-0856.md) | Routine | Windows Kernel | 6.6 | 0.1941 | | | [CVE-2019-0842](https://patchblox.com/security/data/cve/CVE-2019-0842.md) | Routine | Microsoft Windows | 6.4 | 0.1803 | | | [CVE-2019-0802](https://patchblox.com/security/data/cve/CVE-2019-0802.md) | Routine | Microsoft Graphics Component | 4.7 | 0.0953 | | | [CVE-2019-0849](https://patchblox.com/security/data/cve/CVE-2019-0849.md) | Routine | Microsoft Graphics Component | 4.7 | 0.0953 | | | [CVE-2019-0764](https://patchblox.com/security/data/cve/CVE-2019-0764.md) | Routine | Microsoft Browsers | 6.3 | 0.0364 | | | [CVE-2019-0839](https://patchblox.com/security/data/cve/CVE-2019-0839.md) | Routine | Microsoft Windows | 4.4 | 0.0220 | | | [CVE-2019-0848](https://patchblox.com/security/data/cve/CVE-2019-0848.md) | Routine | Microsoft Windows | 4.7 | 0.0213 | | | [CVE-2019-0838](https://patchblox.com/security/data/cve/CVE-2019-0838.md) | Routine | Microsoft Windows | 6.6 | 0.0206 | | --- Data as of 2026-11-07T06:34:28Z 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