# KB5005030: August 2021 cumulative update for Windows 10 1809 KB5005030, released August 10, 2021, fixes 27 CVEs across 5 products. 5 of them are being exploited (CVE-2021-36934); 5 on CISA KEV. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/fix/microsoft/kb5005030 - Platform: Microsoft - Released: Aug 10, 2021 - Priority: Patch now (Closes CVE-2021-36934, exploited (CISA KEV)) - CVEs: 27, exploited: 5, on CISA KEV: 5 - Vendor advisory: https://support.microsoft.com/help/5005030 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows 10 Version 1809 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1809-for-32-bit-systems.md) | | 17763.2114 | | [Windows 10 Version 1809 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1809-for-arm64-based-systems.md) | | 17763.2114 | | [Windows 10 Version 1809 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1809-for-x64-based-systems.md) | | 17763.2114 | | [Windows Server 2019](https://patchblox.com/security/data/product/microsoft/windows-server-2019.md) | | 17763.2114 | | [Windows Server 2019 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2019-server-core-installation.md) | | 17763.2114 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2021-36934](https://patchblox.com/security/data/cve/CVE-2021-36934.md) | Patch now | Microsoft Windows | 7.8 | 0.6725 | CISA KEV, Disclosed | | [CVE-2021-36942](https://patchblox.com/security/data/cve/CVE-2021-36942.md) | Patch now | Windows NTLM | 7.5 | 0.6602 | CISA KEV, Ransomware, Disclosed | | [CVE-2021-36948](https://patchblox.com/security/data/cve/CVE-2021-36948.md) | Patch now | Windows Update | 7.8 | 0.2327 | CISA KEV | | [CVE-2021-34484](https://patchblox.com/security/data/cve/CVE-2021-34484.md) | Patch now | Windows User Profile Service | 7.8 | 0.2183 | CISA KEV | | [CVE-2021-34486](https://patchblox.com/security/data/cve/CVE-2021-34486.md) | Patch now | Windows Event Tracing | 7.8 | 0.0933 | CISA KEV | | [CVE-2021-26424](https://patchblox.com/security/data/cve/CVE-2021-26424.md) | Urgent | Windows TCP/IP | 9.9 | 0.6113 | More likely | | [CVE-2021-34481](https://patchblox.com/security/data/cve/CVE-2021-34481.md) | Urgent | Windows Print Spooler Components | 8.8 | 0.4772 | Disclosed | | [CVE-2021-34480](https://patchblox.com/security/data/cve/CVE-2021-34480.md) | Urgent | Microsoft Scripting Engine | 6.8 | 0.3419 | More likely | | [CVE-2021-34535](https://patchblox.com/security/data/cve/CVE-2021-34535.md) | Urgent | Remote Desktop Client | 8.8 | 0.2186 | More likely | | [CVE-2021-26432](https://patchblox.com/security/data/cve/CVE-2021-26432.md) | Urgent | Windows Services for NFS ONCRPC XDR Driver | 9.8 | 0.1143 | More likely | | [CVE-2021-36947](https://patchblox.com/security/data/cve/CVE-2021-36947.md) | Urgent | Windows Print Spooler Components | 8.8 | 0.0756 | More likely | | [CVE-2021-36936](https://patchblox.com/security/data/cve/CVE-2021-36936.md) | Urgent | Windows Print Spooler Components | 8.8 | 0.0748 | Disclosed | | [CVE-2021-34530](https://patchblox.com/security/data/cve/CVE-2021-34530.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0244 | | | [CVE-2021-34534](https://patchblox.com/security/data/cve/CVE-2021-34534.md) | Urgent | Windows MSHTML Platform | 6.8 | 0.0224 | | | [CVE-2021-26433](https://patchblox.com/security/data/cve/CVE-2021-26433.md) | High | Windows Services for NFS ONCRPC XDR Driver | 7.5 | 0.0357 | | | [CVE-2021-36926](https://patchblox.com/security/data/cve/CVE-2021-36926.md) | High | Windows Services for NFS ONCRPC XDR Driver | 7.5 | 0.0350 | | | [CVE-2021-36932](https://patchblox.com/security/data/cve/CVE-2021-36932.md) | High | Windows Services for NFS ONCRPC XDR Driver | 7.5 | 0.0350 | | | [CVE-2021-36933](https://patchblox.com/security/data/cve/CVE-2021-36933.md) | High | Windows Services for NFS ONCRPC XDR Driver | 7.5 | 0.0350 | | | [CVE-2021-34533](https://patchblox.com/security/data/cve/CVE-2021-34533.md) | High | Microsoft Graphics Component | 7.8 | 0.0244 | | | [CVE-2021-36937](https://patchblox.com/security/data/cve/CVE-2021-36937.md) | High | Microsoft Windows Codecs Library | 7.8 | 0.0230 | | | [CVE-2021-34483](https://patchblox.com/security/data/cve/CVE-2021-34483.md) | High | Windows Print Spooler Components | 7.8 | 0.0109 | | | [CVE-2021-26425](https://patchblox.com/security/data/cve/CVE-2021-26425.md) | High | Windows Event Tracing | 7.8 | 0.0090 | | | [CVE-2021-26426](https://patchblox.com/security/data/cve/CVE-2021-26426.md) | High | Windows User Profile Service | 7.0 | 0.0071 | | | [CVE-2021-34536](https://patchblox.com/security/data/cve/CVE-2021-34536.md) | High | Windows Storage Spaces Controller | 7.8 | 0.0064 | | | [CVE-2021-34487](https://patchblox.com/security/data/cve/CVE-2021-34487.md) | High | Windows Event Tracing | 7.0 | 0.0061 | | | [CVE-2021-34537](https://patchblox.com/security/data/cve/CVE-2021-34537.md) | High | Windows Bluetooth Service | 7.8 | 0.0050 | | | [CVE-2021-36938](https://patchblox.com/security/data/cve/CVE-2021-36938.md) | Routine | Windows Cryptographic Services | 5.5 | 0.0088 | | --- Data as of 2026-11-07T18:46:35Z UTC. 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