# KB4556843: May 2020 security update KB4556843, released May 12, 2020, fixes 26 CVEs across 4 products. One of them is being exploited (CVE-2020-1054); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb4556843 - Platform: Microsoft - Released: May 12, 2020 - Priority: Patch now (Closes CVE-2020-1054, exploited (CISA KEV)) - CVEs: 26, exploited: 1, on CISA KEV: 1 - Vendor advisory: https://support.microsoft.com/help/4556843 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows 7 for 32-bit Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-7-for-32-bit-systems-service-pack-1.md) | | | | [Windows 7 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-7-for-x64-based-systems-service-pack-1.md) | | | | [Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) | | | | [Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2020-1054](https://patchblox.com/security/data/cve/CVE-2020-1054.md) | Patch now | Microsoft Graphics Component | 7.0 | 0.5388 | CISA KEV | | [CVE-2020-1153](https://patchblox.com/security/data/cve/CVE-2020-1153.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0396 | | | [CVE-2020-1143](https://patchblox.com/security/data/cve/CVE-2020-1143.md) | Urgent | Microsoft Windows | 7.0 | 0.0108 | More likely | | [CVE-2020-1048](https://patchblox.com/security/data/cve/CVE-2020-1048.md) | High | Microsoft Windows | 7.8 | 0.1650 | | | [CVE-2020-1179](https://patchblox.com/security/data/cve/CVE-2020-1179.md) | High | Microsoft Graphics Component | n/a | 0.0522 | | | [CVE-2020-0909](https://patchblox.com/security/data/cve/CVE-2020-0909.md) | High | Windows Hyper-V | 7.5 | 0.0473 | | | [CVE-2020-1174](https://patchblox.com/security/data/cve/CVE-2020-1174.md) | High | Microsoft JET Database Engine | 7.8 | 0.0380 | | | [CVE-2020-1051](https://patchblox.com/security/data/cve/CVE-2020-1051.md) | High | Microsoft JET Database Engine | 7.8 | 0.0377 | | | [CVE-2020-1175](https://patchblox.com/security/data/cve/CVE-2020-1175.md) | High | Microsoft JET Database Engine | 7.8 | 0.0377 | | | [CVE-2020-1176](https://patchblox.com/security/data/cve/CVE-2020-1176.md) | High | Microsoft JET Database Engine | 7.8 | 0.0377 | | | [CVE-2020-1150](https://patchblox.com/security/data/cve/CVE-2020-1150.md) | High | Microsoft Windows | 7.8 | 0.0336 | | | [CVE-2020-1061](https://patchblox.com/security/data/cve/CVE-2020-1061.md) | High | Windows Scripting | 7.5 | 0.0335 | | | [CVE-2020-1112](https://patchblox.com/security/data/cve/CVE-2020-1112.md) | High | Microsoft Windows | 8.5 | 0.0329 | | | [CVE-2020-1067](https://patchblox.com/security/data/cve/CVE-2020-1067.md) | High | Microsoft Windows | 7.8 | 0.0254 | | | [CVE-2020-1070](https://patchblox.com/security/data/cve/CVE-2020-1070.md) | High | Microsoft Windows | 7.8 | 0.0115 | | | [CVE-2020-1010](https://patchblox.com/security/data/cve/CVE-2020-1010.md) | High | Microsoft Windows | 7.8 | 0.0098 | | | [CVE-2020-1081](https://patchblox.com/security/data/cve/CVE-2020-1081.md) | High | Microsoft Windows | 7.8 | 0.0095 | | | [CVE-2020-1114](https://patchblox.com/security/data/cve/CVE-2020-1114.md) | High | Windows Kernel | 7.8 | 0.0095 | | | [CVE-2020-1154](https://patchblox.com/security/data/cve/CVE-2020-1154.md) | High | Common Log File System Driver | 7.8 | 0.0095 | | | [CVE-2020-1078](https://patchblox.com/security/data/cve/CVE-2020-1078.md) | High | Microsoft Windows | 7.8 | 0.0084 | | | [CVE-2020-1113](https://patchblox.com/security/data/cve/CVE-2020-1113.md) | Routine | Windows Task Scheduler | 5.3 | 0.0631 | | | [CVE-2020-0963](https://patchblox.com/security/data/cve/CVE-2020-0963.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0476 | | | [CVE-2020-1141](https://patchblox.com/security/data/cve/CVE-2020-1141.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0202 | | | [CVE-2020-1072](https://patchblox.com/security/data/cve/CVE-2020-1072.md) | Routine | Microsoft Windows | 5.5 | 0.0128 | | | [CVE-2020-1116](https://patchblox.com/security/data/cve/CVE-2020-1116.md) | Routine | Microsoft Windows | 5.5 | 0.0128 | | | [CVE-2020-1071](https://patchblox.com/security/data/cve/CVE-2020-1071.md) | Routine | Microsoft Windows | 6.8 | 0.0104 | | --- Data as of 2026-11-10T01:44:33Z UTC. 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