# CVE-2021-41337: Active Directory Security Feature Bypass Vulnerability

CVE-2021-41337 is fixed in 8 products on 1 platform, first by KB5006669, released October 12, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-41337
- Priority: Routine
- CVSS: 4.9 (Important)
- EPSS: 0.0164
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Apr 12, 2022
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41337

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows Server 2016 | 14393.4704 | [KB5006669](https://patchblox.com/security/data/fix/microsoft/kb5006669.md) | Oct 12, 2021 |
| Microsoft | Windows Server 2016 (Server Core installation) | 14393.4704 | [KB5006669](https://patchblox.com/security/data/fix/microsoft/kb5006669.md) | Oct 12, 2021 |
| Microsoft | Windows Server 2019 | 17763.2237 | [KB5006672](https://patchblox.com/security/data/fix/microsoft/kb5006672.md) | Oct 12, 2021 |
| Microsoft | Windows Server 2019 (Server Core installation) | 17763.2237 | [KB5006672](https://patchblox.com/security/data/fix/microsoft/kb5006672.md) | Oct 12, 2021 |
| Microsoft | Windows Server 2022 | 20348.288 | [KB5006699](https://patchblox.com/security/data/fix/microsoft/kb5006699.md) | Oct 12, 2021 |
| Microsoft | Windows Server 2022 (Server Core installation) | 20348.288 | [KB5006699](https://patchblox.com/security/data/fix/microsoft/kb5006699.md) | Oct 12, 2021 |
| Microsoft | Windows Server, version 2004 (Server Core installation) |  | [KB5006670](https://patchblox.com/security/data/fix/microsoft/kb5006670.md) | Oct 12, 2021 |
| Microsoft | Windows Server, version 20H2 (Server Core Installation) |  | [KB5006670](https://patchblox.com/security/data/fix/microsoft/kb5006670.md) | Oct 12, 2021 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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