# CVE-2019-1202: SharePoint Information Disclosure Vulnerability

CVE-2019-1202 is fixed in 4 products on 1 platform, first by KB4475549, released August 13, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-1202
- Priority: High
- CVSS: n/a (Important)
- EPSS: 0.0159
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Sep 11, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1202

## Description

<p>An information disclosure vulnerability exists in the way Microsoft SharePoint handles session objects. An authenticated attacker who successfully exploited the vulnerability could hijack the session of another user.</p> <p>To exploit this vulnerability, the attacker could run a specially crafted application.</p> <p>The security update corrects how SharePoint handles session objects to prevent user session hijacking.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |  | [KB4475549](https://patchblox.com/security/data/fix/microsoft/kb4475549.md) | Aug 13, 2019 |
| Microsoft | Microsoft SharePoint Foundation 2010 Service Pack 2 |  | [KB4475575](https://patchblox.com/security/data/fix/microsoft/kb4475575.md) | Sep 11, 2019 |
| Microsoft | Microsoft SharePoint Foundation 2013 Service Pack 1 |  | [KB4475565](https://patchblox.com/security/data/fix/microsoft/kb4475565.md) | Sep 11, 2019 |
| Microsoft | Microsoft SharePoint Server 2019 |  | [KB4475555](https://patchblox.com/security/data/fix/microsoft/kb4475555.md) | Aug 13, 2019 |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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