# CVE-2021-36942: Windows LSA Spoofing Vulnerability CVE-2021-36942 is fixed in 16 products on 1 platform, first by KB5005043, released August 10, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, with known ransomware use. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/cve/CVE-2021-36942 - Priority: Patch now - CVSS: 7.5 (Important) - EPSS: 0.6602 - CISA KEV: listed Nov 3, 2021, federal due date Nov 17, 2021, known ransomware use - Exploited (vendor report): no - Publicly disclosed: yes - Vendor exploitability assessment: Exploitation More Likely - Published: Aug 10, 2021 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36942 ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5005089](https://patchblox.com/security/data/fix/microsoft/kb5005089.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5005088](https://patchblox.com/security/data/fix/microsoft/kb5005088.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5005089](https://patchblox.com/security/data/fix/microsoft/kb5005089.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5005088](https://patchblox.com/security/data/fix/microsoft/kb5005088.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB5005095](https://patchblox.com/security/data/fix/microsoft/kb5005095.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB5005090](https://patchblox.com/security/data/fix/microsoft/kb5005090.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB5005095](https://patchblox.com/security/data/fix/microsoft/kb5005095.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB5005090](https://patchblox.com/security/data/fix/microsoft/kb5005090.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB5005095](https://patchblox.com/security/data/fix/microsoft/kb5005095.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB5005090](https://patchblox.com/security/data/fix/microsoft/kb5005090.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB5005095](https://patchblox.com/security/data/fix/microsoft/kb5005095.md) | Aug 10, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB5005090](https://patchblox.com/security/data/fix/microsoft/kb5005090.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 | | [KB5005099](https://patchblox.com/security/data/fix/microsoft/kb5005099.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 | | [KB5005094](https://patchblox.com/security/data/fix/microsoft/kb5005094.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB5005099](https://patchblox.com/security/data/fix/microsoft/kb5005099.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB5005094](https://patchblox.com/security/data/fix/microsoft/kb5005094.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 R2 | | [KB5005076](https://patchblox.com/security/data/fix/microsoft/kb5005076.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 R2 | | [KB5005106](https://patchblox.com/security/data/fix/microsoft/kb5005106.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB5005076](https://patchblox.com/security/data/fix/microsoft/kb5005076.md) | Aug 10, 2021 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB5005106](https://patchblox.com/security/data/fix/microsoft/kb5005106.md) | Aug 10, 2021 | | Microsoft | Windows Server 2016 | 14393.4583 | [KB5005043](https://patchblox.com/security/data/fix/microsoft/kb5005043.md) | Aug 10, 2021 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.4583 | [KB5005043](https://patchblox.com/security/data/fix/microsoft/kb5005043.md) | Aug 10, 2021 | | Microsoft | Windows Server 2019 | 17763.2114 | [KB5005030](https://patchblox.com/security/data/fix/microsoft/kb5005030.md) | Aug 10, 2021 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.2114 | [KB5005030](https://patchblox.com/security/data/fix/microsoft/kb5005030.md) | Aug 10, 2021 | | Microsoft | Windows Server, version 2004 (Server Core installation) | | [KB5005033](https://patchblox.com/security/data/fix/microsoft/kb5005033.md) | Aug 10, 2021 | | Microsoft | Windows Server, version 20H2 (Server Core Installation) | | [KB5005033](https://patchblox.com/security/data/fix/microsoft/kb5005033.md) | Aug 10, 2021 | --- Data as of 2026-11-09T07:25:28Z UTC. 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