Introduction
Microsoft released the following security updates for Office in December 2025. These updates are intended to help our customers keep their computers up to date. We recommend that you install all updates that apply to you.
To download an update, select the corresponding Knowledge Base article in the following list.
List of Office updates released in December 2025
Microsoft Office 2016
|
Product |
Knowledge Base article title and number |
|---|---|
|
Excel 2016 |
Description of the security update for Excel 2016: December 9, 2025 (KB5002820) |
|
Office 2016 |
Description of the security update for Office 2016: December 9, 2025 (KB5002819) |
|
Office 2016 |
Description of the security update for Office 2016: December 9, 2025 (KB5002818) |
|
Office 2016 |
Description of the security update for Office 2016: December 9, 2025 (KB5002812) |
|
Word 2016 |
Description of the security update for Word 2016: December 9, 2025 (KB5002806) |
SharePoint Server Subscription Edition
|
Product |
Knowledge Base article title and number |
|---|---|
|
SharePoint Server Subscription Edition |
Microsoft SharePoint Server 2019
|
Product |
 Knowledge Base article title and number |
|---|---|
|
SharePoint Server 2019 |
Description of the security update for SharePoint Server 2019: December 9, 2025 (KB5002816) |
|
SharePoint Server 2019 Language Pack |
Microsoft SharePoint Server 2016
|
Product |
Knowledge Base article title and number |
|---|---|
|
SharePoint Server 2016Â |
Description of the security update for SharePoint Server 2016: December 9, 2025 (KB5002821) |
|
SharePoint Server 2016 Language Pack |
Office Online Server
|
Product |
Knowledge Base article title and number |
|---|---|
|
Office Online Server               |
Description of the security update for Office Online Server: December 9, 2025 (KB5002817) |
