# CVE-2023-29357: Microsoft SharePoint Server Elevation of Privilege Vulnerability

CVE-2023-29357 is fixed in Microsoft SharePoint Server 2019 on 1 platform, first by KB5002402, released June 13, 2023. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on January 10, 2024, with known ransomware use. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/cve/CVE-2023-29357
- Priority: Patch now
- CVSS: 9.8 (Critical)
- EPSS: 0.9998
- CISA KEV: listed Jan 10, 2024, federal due date Jan 31, 2024, known ransomware use
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Jun 13, 2023
- Weakness: Incorrect Implementation of Authentication Algorithm
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29357

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Server 2019 |  | [KB5002402](https://patchblox.com/security/data/fix/microsoft/kb5002402.md) | Jun 13, 2023 |
| Microsoft | Microsoft SharePoint Server 2019 |  | [KB5002403](https://patchblox.com/security/data/fix/microsoft/kb5002403.md) | Jun 13, 2023 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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