Description
Inclusion of functionality from untrusted control sphere in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Published: 2026-10-13
Score: 7.2 High
EPSS: 1.0% Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

Microsoft Office SharePoint introduces code that originates in an untrusted control sphere; an attacker with sufficient authenticated access can execute arbitrary code on the SharePoint server. This leads to full compromise, allowing the attacker to read, modify or delete data, install malware, or pivot to other systems. The weakness is a privilege escalation flaw identified as CWE‑829 and the impact covers confidentiality, integrity, and availability of the affected system.

Affected Systems

The vulnerability affects Microsoft SharePoint Server Subscription Edition. No specific version ranges are disclosed, so all installed instances are considered at risk until a vendor update is applied.

Risk and Exploitability

The CVSS score of 7.2 indicates moderate to high severity. The EPSS score is not available, so the public exploitation probability cannot be quantified. The vulnerability is not listed in the CISA KEV catalog, suggesting no known active exploits at the time of this writing. An attacker would need network access to the SharePoint server and valid administrative or privileged user credentials; the vulnerability can be exploited by leveraging untrusted input that is executed by the application.

Generated by OpenCVE AI on October 14, 2026 at 04:36 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Microsoft security update that addresses CVE‑2026‑70267 as soon as it becomes available.
  • Restrict network access to the SharePoint server by enabling firewall rules or VPN segmentation to limit exposure to trusted guests only.
  • Enforce least privilege for SharePoint administrative accounts and regularly review permissions to reduce the attack surface.
  • Monitor SharePoint logs for unusual activity and set up alerts for unexpected code execution or privilege escalation events.

Generated by OpenCVE AI on October 14, 2026 at 04:36 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 13 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Inclusion of functionality from untrusted control sphere in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Title Microsoft Office SharePoint Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft sharepoint Server
Weaknesses CWE-829
CPEs cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
Vendors & Products Microsoft
Microsoft sharepoint Server
References
Metrics cvssV3_1

{'score': 7.2, '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'}


Subscriptions

Microsoft Sharepoint Server
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-31T18:06:23.058Z

Reserved: 2026-08-03T23:56:34.119Z

Link: CVE-2026-70267

cve-icon Vulnrichment

Updated: 2026-10-13T20:45:31.427Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:19:45.420

Modified: 2026-10-14T19:45:00.953

Link: CVE-2026-70267

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T21:00:07Z

Weaknesses
  • CWE-829

    Inclusion of Functionality from Untrusted Control Sphere