CVE-2026-70266

Microsoft Office SharePoint Elevation of Privilege Vulnerability

Published Oct 13, 2026 CVSS 3.1 · 8.8 High EPSS 1.1% KEV · Not listed
Description
Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Analysis

AI-generated

Technical impact

The flaw is an SQL injection caused by improper neutralization of special elements in SQL commands within Microsoft Office SharePoint. An attacker with authorized credentials can inject malicious SQL statements that the server executes, leading to unauthorized privilege escalation and potentially granting access beyond the attacker's intended scope.

Affected Systems

Affected product is Microsoft SharePoint Server Subscription Edition. Specific vulnerable versions are not listed in the CVE data, so any deployed SharePoint Server Subscription Edition that has not yet received the latest security update should be considered at risk.

Risk and Exploitability

With a CVSS score of 8.8, the vulnerability is considered high severity. The EPSS score is not available and the issue is not listed in the CISA KEV catalog, indicating no publicly known exploits yet. The likely attack vector requires an attacker to already have authenticated access; thus the exploitation is probably limited to internal or compromised credentials. Nonetheless, the high severity coupled with the potential for privilege escalation makes it a critical issue that should be addressed promptly.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Download and apply the most recent security update for SharePoint Server Subscription Edition from the Microsoft Security Response Center, following the instructions on the Microsoft update guide.
  • Restrict or remove elevation privileges from user accounts that do not require them; audit role assignments regularly to ensure least privilege.
  • Enforce input validation and output encoding on all user-supplied data that is incorporated into SQL queries, especially for special characters that can be used for injection.

Generated by OpenCVE AI on October 14, 2026 at 03:12 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Improper neutralization of special elements used in an sql command ('sql injection') 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-89
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'}

Weaknesses
  • CWE-89

    Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 8:39 PM
Reserved
Aug 3, 2026, 11:56 PM
Status
Analyzed
Published
Oct 13, 2026, 7:19 PM
Modified
Oct 14, 2026, 7:44 PM