CVE-2026-70267: Microsoft Office SharePoint Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 7.2)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Oct

Released

2026-10-13

Description

Inclusion of functionality from untrusted control sphere in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

FAQ

Is the Preview Pane an attack vector for this vulnerability? No, the Preview Pane is not an attack vector. 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.

Affected Products (1)

Microsoft Office

• Microsoft SharePoint Server Subscription Edition

Security Updates (1)

• 5002927

Revision History

• 2026-10-13: Information published.