# CVE-2021-42287: Active Directory Domain Services Elevation of Privilege Vulnerability CVE-2021-42287 is fixed in 18 products on 1 platform, first by KB5007192, released November 9, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on April 11, 2022, with known ransomware use. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/cve/CVE-2021-42287 - Priority: Patch now - CVSS: 7.5 (Important) - EPSS: 0.7717 - CISA KEV: listed Apr 11, 2022, federal due date May 2, 2022, known ransomware use - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Nov 9, 2021 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42287 ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5007236](https://patchblox.com/security/data/fix/microsoft/kb5007236.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB5007233](https://patchblox.com/security/data/fix/microsoft/kb5007233.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5007236](https://patchblox.com/security/data/fix/microsoft/kb5007236.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB5007233](https://patchblox.com/security/data/fix/microsoft/kb5007233.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB5007246](https://patchblox.com/security/data/fix/microsoft/kb5007246.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB5007263](https://patchblox.com/security/data/fix/microsoft/kb5007263.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB5007246](https://patchblox.com/security/data/fix/microsoft/kb5007246.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB5007263](https://patchblox.com/security/data/fix/microsoft/kb5007263.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB5007246](https://patchblox.com/security/data/fix/microsoft/kb5007246.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB5007263](https://patchblox.com/security/data/fix/microsoft/kb5007263.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB5007246](https://patchblox.com/security/data/fix/microsoft/kb5007246.md) | Nov 9, 2021 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB5007263](https://patchblox.com/security/data/fix/microsoft/kb5007263.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 | | [KB5007260](https://patchblox.com/security/data/fix/microsoft/kb5007260.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 | | [KB5007245](https://patchblox.com/security/data/fix/microsoft/kb5007245.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB5007260](https://patchblox.com/security/data/fix/microsoft/kb5007260.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB5007245](https://patchblox.com/security/data/fix/microsoft/kb5007245.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 R2 | | [KB5007255](https://patchblox.com/security/data/fix/microsoft/kb5007255.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 R2 | | [KB5007247](https://patchblox.com/security/data/fix/microsoft/kb5007247.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB5007255](https://patchblox.com/security/data/fix/microsoft/kb5007255.md) | Nov 9, 2021 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB5007247](https://patchblox.com/security/data/fix/microsoft/kb5007247.md) | Nov 9, 2021 | | Microsoft | Windows Server 2016 | 14393.4770 | [KB5007192](https://patchblox.com/security/data/fix/microsoft/kb5007192.md) | Nov 9, 2021 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.4770 | [KB5007192](https://patchblox.com/security/data/fix/microsoft/kb5007192.md) | Nov 9, 2021 | | Microsoft | Windows Server 2019 | 17763.2300 | [KB5007206](https://patchblox.com/security/data/fix/microsoft/kb5007206.md) | Nov 9, 2021 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.2300 | [KB5007206](https://patchblox.com/security/data/fix/microsoft/kb5007206.md) | Nov 9, 2021 | | Microsoft | Windows Server 2022 | 20348.350 | [KB5007205](https://patchblox.com/security/data/fix/microsoft/kb5007205.md) | Nov 9, 2021 | | Microsoft | Windows Server 2022 (Server Core installation) | 20348.350 | [KB5007205](https://patchblox.com/security/data/fix/microsoft/kb5007205.md) | Nov 9, 2021 | | Microsoft | Windows Server, version 2004 (Server Core installation) | | [KB5007186](https://patchblox.com/security/data/fix/microsoft/kb5007186.md) | Nov 9, 2021 | | Microsoft | Windows Server, version 20H2 (Server Core Installation) | | [KB5007186](https://patchblox.com/security/data/fix/microsoft/kb5007186.md) | Nov 9, 2021 | --- Data as of 2026-11-08T13:06:02Z UTC. 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