CVE-2026-69409: Microsoft Office SharePoint Information Disclosure Vulnerability

Overview

Severity
Medium (CVSS 6.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Category
Information Disclosure
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Sep
Released
2026-09-08

Description

Execution with unnecessary privileges in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

FAQ

I am running SharePoint Server 2016. Do the updates for SharePoint Enterprise Server 2016 also apply to the version I am running? Yes. The same KB number applies to both SharePoint Server 2016 and SharePoint Enterprise Server 2016. Customers running either version should install the security update to be protected from this vulnerability. There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software? Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order. What type of information could be disclosed by this vulnerability? Successful exploitation could disclose legal-hold and eDiscovery metadata that the attacker is not authorized to view, including hold titles, descriptions, managers, and search criteria.

Affected Products (1)

Microsoft Office

  • Microsoft SharePoint Server Subscription Edition

Security Updates (1)

Acknowledgments

<a href="https://www.linkedin.com/in/navaponpremkasem/">71C4</a>

Revision History

  • 2026-09-08: Information published.