Description
Privilege context switching error in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Published: 2026-10-13
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Privilege Escalation
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is a privilege context switching error in Microsoft Office SharePoint that allows an authorized attacker to elevate privileges across the network, potentially gaining administrative rights or executing higher‑authority code. It is classified as CWE‑270, indicating improper privilege management.

Affected Systems

The affected product is Microsoft SharePoint Server Subscription Edition. No specific affected versions are listed in the CNA data, so all deployments of this edition remain potentially vulnerable until patched.

Risk and Exploitability

The CVSS score of 8.8 indicates high severity, while the EPSS score is unavailable, making the exact exploitation likelihood uncertain. The vulnerability is not listed in CISA KEV. Although the description states the attacker must be authorized, the exploit likely proceeds over the network. Given the high severity, security teams should treat this as a critical issue with significant implications for confidentiality, integrity, and availability.

Generated by OpenCVE AI on October 14, 2026 at 09:50 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest security update for Microsoft SharePoint Server Subscription Edition that addresses CVE-2026-88200.
  • Enforce the principle of least privilege by reviewing and limiting user permissions in SharePoint to only those required for each role.
  • Monitor authentication and privilege escalation events through audit logs and set alerts for anomalous privilege changes.

Generated by OpenCVE AI on October 14, 2026 at 09:50 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 14 Oct 2026 00:30:00 +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 Privilege context switching error in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Title Microsoft Office SharePoint Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft sharepoint Server
Weaknesses CWE-270
CPEs cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
Vendors & Products Microsoft
Microsoft sharepoint Server
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/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: 2026-10-31T18:10:51.403Z

Reserved: 2026-09-09T22:01:13.384Z

Link: CVE-2026-88200

cve-icon Vulnrichment

Updated: 2026-10-13T19:50:16.378Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:21:41.547

Modified: 2026-10-14T19:43:29.060

Link: CVE-2026-88200

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T19:30:17Z

Weaknesses
  • CWE-270

    Privilege Context Switching Error