CVE-2026-69716 in SharePoint Server
Summary
by MITRE • 09/09/2026
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.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 09/09/2026
The vulnerability described constitutes a classic SQL Injection flaw within the Microsoft Office SharePoint environment, specifically categorized under CWE-89: Improper Neutralization of Special Elements used in an SQL Command. This security defect arises from the application's failure to adequately sanitize or validate user-supplied input before incorporating it into dynamically constructed database queries. In this context, the lack of proper encoding or parameterization allows malicious actors to inject arbitrary SQL commands that are subsequently executed by the backend database engine. The severity of this issue is compounded by its potential for privilege escalation, indicating that an attacker who has already gained authorized access can leverage this flaw to manipulate underlying data structures or administrative functions beyond their intended permissions.
From a technical perspective, the root cause lies in the concatenation of user input directly into SQL statements without employing prepared statements or stored procedures with parameterized queries. When SharePoint processes requests containing specially crafted payloads, it interprets these inputs as executable code rather than literal data strings. This misinterpretation enables the attacker to alter the logic of database operations, potentially bypassing authentication checks, extracting sensitive information from restricted tables, modifying configuration settings, or executing administrative commands on the server hosting the SQL instance. The ability to elevate privileges suggests that the vulnerable component likely interacts with high-privilege accounts or executes queries under a context with elevated permissions, thereby amplifying the impact of the injection.
The operational impact of this vulnerability is significant for organizations relying on SharePoint for collaboration and document management. An authorized attacker who exploits this flaw can achieve unauthorized privilege escalation, effectively gaining control over sensitive corporate data that should be restricted to higher-level administrators or specific user groups. This could lead to comprehensive data breaches, including the exposure of confidential documents, employee records, and strategic business information stored within the SharePoint databases. Furthermore, if the underlying SQL Server is configured with excessive permissions, such as access to xp_cmdshell or other extended procedures, the attacker might achieve remote code execution on the database server itself, leading to a complete compromise of the infrastructure hosting the application.
In terms of industry frameworks, this vulnerability aligns with MITRE ATT&CK technique T1190: Exploit Public-Facing Application, although in this specific case, the initial access vector requires prior authorization. The exploitation path typically involves techniques associated with Data Injection (T1198) and potentially Privilege Escalation (T1068), as the attacker leverages the injection to gain higher-level access rights within the application or operating system. Defense-in-depth strategies are critical here, emphasizing that network segmentation alone is insufficient if the application layer fails to validate inputs properly.
Mitigation efforts must prioritize immediate patching of Microsoft Office SharePoint with the latest security updates released by Microsoft, which address this specific SQL injection flaw. Application developers and administrators should review custom web parts or third-party solutions integrated into SharePoint for similar vulnerabilities, ensuring that all database interactions utilize parameterized queries rather than string concatenation. Additionally, implementing strict input validation routines on both client-side and server-side can provide an additional layer of defense against malformed inputs. Database-level mitigations include enforcing the principle of least privilege by restricting the permissions of the account used to connect SharePoint to SQL Server, ensuring it does not possess administrative rights or access to dangerous system stored procedures. Regular security audits and penetration testing focused on injection flaws are also recommended to identify and remediate similar weaknesses before they can be exploited in production environments.