# KB5029566: August 2023 security update

KB5029566, released August 8, 2023, fixes 2 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5029566
- Platform: Microsoft
- Released: Aug 8, 2023
- Priority: High (Closes CVE-2023-36899, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5029566

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-4.6.2-4.7-4.7.1-4.7.2-on-windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) |  |  |
| [Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-4.6.2-4.7-4.7.1-4.7.2-on-windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation.md) |  |  |
| [Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-4.8-on-windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) |  |  |
| [Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/microsoft-.net-framework-4.8-on-windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-36899](https://patchblox.com/security/data/cve/CVE-2023-36899.md) | High | ASP.NET | 8.8 | 0.7671 |  |
| [CVE-2023-36873](https://patchblox.com/security/data/cve/CVE-2023-36873.md) | High | .NET Framework | 7.4 | 0.0150 |  |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo