KB5002802: This security update resolves Microsoft Excel Information vulnerability

Description of the security update for SharePoint Server 2019 Language Pack: December 9, 2025 (KB5002802)

This security update resolves Microsoft Excel Information Disclosure vulnerability and Microsoft Word Remote Code Execution vulnerability. To learn more about the vulnerabilities, see the following security advisories:

• Microsoft Common Vulnerabilities and Exposures CVE-2025-62562
• Microsoft Common Vulnerabilities and Exposures CVE-2025-62559
• Microsoft Common Vulnerabilities and Exposures CVE-2025-62558
• Microsoft Common Vulnerabilities and Exposures CVE-2025-62555

Notes:

• This is build 16.0.10417.20075 of the security update package.
• To apply this security update, you must have the release version of Microsoft SharePoint Server 2019 installed on the computer.