# KB5002423: July 2023 security update

KB5002423, released July 11, 2023, fixes 5 CVEs in Microsoft SharePoint Server 2019. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5002423
- Platform: Microsoft
- Released: Jul 11, 2023
- Priority: Urgent (Closes CVE-2023-33157, exploitation more likely)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5002423

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft SharePoint Server 2019](https://patchblox.com/security/data/product/microsoft/microsoft-sharepoint-server-2019.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-33157](https://patchblox.com/security/data/cve/CVE-2023-33157.md) | Urgent | Microsoft Office SharePoint | 8.8 | 0.3816 | More likely |
| [CVE-2023-33160](https://patchblox.com/security/data/cve/CVE-2023-33160.md) | Urgent | Microsoft Office SharePoint | 8.8 | 0.0432 |  |
| [CVE-2023-33134](https://patchblox.com/security/data/cve/CVE-2023-33134.md) | Urgent | Microsoft Office SharePoint | 8.8 | 0.0257 | More likely |
| [CVE-2023-33159](https://patchblox.com/security/data/cve/CVE-2023-33159.md) | High | Microsoft Office SharePoint | 8.8 | 0.0130 |  |
| [CVE-2023-33165](https://patchblox.com/security/data/cve/CVE-2023-33165.md) | Routine | Microsoft Office SharePoint | 4.3 | 0.0113 |  |

---

Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo