Description of the security update for SharePoint Server 2019: August 13, 2019

Applies to: SharePoint Server 2019


This security update resolves a cross-site-scripting (XSS) vulnerability that exists if Microsoft SharePoint Server does not correctly sanitize a specially crafted web request to an affected SharePoint server. To learn more about the vulnerability, see the following: 

Note To apply this security update, you must have the release version of Microsoft SharePoint Server 2019 installed on the computer.

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issues:

  • Improved SharePoint search compatibility with PDF files.

  • Fix: The search crawler fails if the crawl proxy exclusion list starts with an asterisk (*) wildcard character. This causes content that is accessed through proxy servers to be non-searchable in the farm.

  • Fix: When the Schedule Variance Percentage (SVP) earned value field becomes very large, an overflow condition occurs and prevents PWA project views from loading.

  • Fix: When you click the Export to Excel button to export data on pages such as from the Project Center, you receive the following error message: 

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

More information

Security update deployment information

For deployment information about this update, see security update deployment information: August 13, 2019.

Security update replacement information

This security update replaces previously released security update 4475529.

File hash information

File name SHA1 hash SHA256 hash
sts2019-kb4475555-fullfile-x64-glb.exe 8DB19511AA316B8429E014E91EB8825E9FAC6A85 8ADE801C5589754F1F0AC11B3A79691E812EF9D20179838B85A6D5B87F420E1B

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

How to get help and support for this security update

Help for installing updates: Protect yourself online

Help for protecting your Windows-based computer from viruses and malware: Microsoft Security

Local support according to your country: International Support