# KB4534306: January 2020 cumulative update for Windows 10 1507 KB4534306, released January 14, 2020, fixes 29 CVEs across 6 products. 2 of them are being exploited (CVE-2020-0646); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb4534306 - Platform: Microsoft - Released: Jan 14, 2020 - Priority: Patch now (Closes CVE-2020-0646, exploited (CISA KEV)) - CVEs: 29, exploited: 2, on CISA KEV: 2 - Vendor advisory: https://support.microsoft.com/help/4534306 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Internet Explorer 11 on Windows 10 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-for-32-bit-systems.md) | | 10240.18453 | | [Internet Explorer 11 on Windows 10 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-for-x64-based-systems.md) | | 10240.18453 | | [Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.6-4.6.1-4.6.2-on-windows-10-for-32-bit-systems.md) | | 10240.18453 | | [Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-3.5-and-4.6-4.6.1-4.6.2-on-windows-10-for-x64-based-systems.md) | | 10240.18453 | | [Windows 10 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-for-32-bit-systems.md) | | 10240.18453 | | [Windows 10 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-for-x64-based-systems.md) | | 10240.18453 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2020-0646](https://patchblox.com/security/data/cve/CVE-2020-0646.md) | Patch now | .NET Framework | n/a | 0.9922 | CISA KEV | | [CVE-2020-0601](https://patchblox.com/security/data/cve/CVE-2020-0601.md) | Patch now | Microsoft Windows | 8.1 | 0.8908 | CISA KEV | | [CVE-2020-0606](https://patchblox.com/security/data/cve/CVE-2020-0606.md) | Urgent | .NET Framework | n/a | 0.1834 | | | [CVE-2020-0611](https://patchblox.com/security/data/cve/CVE-2020-0611.md) | Urgent | Windows RDP | 7.5 | 0.0718 | | | [CVE-2020-0634](https://patchblox.com/security/data/cve/CVE-2020-0634.md) | Urgent | Common Log File System Driver | 7.8 | 0.0132 | More likely | | [CVE-2020-0642](https://patchblox.com/security/data/cve/CVE-2020-0642.md) | High | Microsoft Graphics Component | 7.8 | 0.0161 | | | [CVE-2020-0635](https://patchblox.com/security/data/cve/CVE-2020-0635.md) | High | Microsoft Windows | 7.8 | 0.0113 | | | [CVE-2020-0641](https://patchblox.com/security/data/cve/CVE-2020-0641.md) | High | Windows Media | 7.8 | 0.0099 | | | [CVE-2020-0644](https://patchblox.com/security/data/cve/CVE-2020-0644.md) | High | Microsoft Windows | 7.8 | 0.0093 | | | [CVE-2020-0613](https://patchblox.com/security/data/cve/CVE-2020-0613.md) | High | Microsoft Windows Search Component | 7.8 | 0.0091 | | | [CVE-2020-0614](https://patchblox.com/security/data/cve/CVE-2020-0614.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 | | | [CVE-2020-0623](https://patchblox.com/security/data/cve/CVE-2020-0623.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 | | | [CVE-2020-0625](https://patchblox.com/security/data/cve/CVE-2020-0625.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 | | | [CVE-2020-0627](https://patchblox.com/security/data/cve/CVE-2020-0627.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 | | | [CVE-2020-0628](https://patchblox.com/security/data/cve/CVE-2020-0628.md) | High | Microsoft Windows Search Component | 7.8 | 0.0086 | | | [CVE-2020-0631](https://patchblox.com/security/data/cve/CVE-2020-0631.md) | High | Microsoft Windows Search Component | 7.8 | 0.0081 | | | [CVE-2020-0620](https://patchblox.com/security/data/cve/CVE-2020-0620.md) | High | Microsoft Windows | 7.8 | 0.0080 | | | [CVE-2020-0626](https://patchblox.com/security/data/cve/CVE-2020-0626.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 | | | [CVE-2020-0629](https://patchblox.com/security/data/cve/CVE-2020-0629.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 | | | [CVE-2020-0630](https://patchblox.com/security/data/cve/CVE-2020-0630.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 | | | [CVE-2020-0632](https://patchblox.com/security/data/cve/CVE-2020-0632.md) | High | Microsoft Windows Search Component | 7.8 | 0.0080 | | | [CVE-2020-0640](https://patchblox.com/security/data/cve/CVE-2020-0640.md) | Routine | Microsoft Scripting Engine | 6.4 | 0.0922 | | | [CVE-2020-0607](https://patchblox.com/security/data/cve/CVE-2020-0607.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0634 | | | [CVE-2020-0615](https://patchblox.com/security/data/cve/CVE-2020-0615.md) | Routine | Common Log File System Driver | 5.5 | 0.0180 | | | [CVE-2020-0617](https://patchblox.com/security/data/cve/CVE-2020-0617.md) | Routine | Windows Hyper-V | 5.3 | 0.0141 | | | [CVE-2020-0608](https://patchblox.com/security/data/cve/CVE-2020-0608.md) | Routine | Microsoft Windows | 5.5 | 0.0140 | | | [CVE-2020-0639](https://patchblox.com/security/data/cve/CVE-2020-0639.md) | Routine | Common Log File System Driver | 5.5 | 0.0140 | | | [CVE-2020-0643](https://patchblox.com/security/data/cve/CVE-2020-0643.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0140 | | | [CVE-2020-0622](https://patchblox.com/security/data/cve/CVE-2020-0622.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0139 | | --- Data as of 2026-11-07T12:40:37Z UTC. 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