CVE-2026-89110 in NetWeaver Visual Composer
Summary
by MITRE • 10/13/2026
SAP NetWeaver Visual Composer does not perform sufficient authorization checks in certain portal functionality. An attacker with low privileges could invoke internal operations on a preconfigured remote system. Depending on the remote connection configuration, this could lead to a full compromise of the remote system. This results in a high impact on confidentiality, integrity and availability.
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Analysis
by VulDB Data Team • 10/13/2026
The vulnerability identified within SAP NetWeaver Visual Composer represents a critical failure in access control mechanisms, specifically categorized under CWE-269 Improper Privilege Management. The core technical flaw lies in the application's inability to enforce sufficient authorization checks when handling requests directed at specific portal functionalities. In secure software architecture, every action that interacts with external systems or modifies internal state must be validated against the user’s assigned roles and permissions. However, in this instance, the system fails to verify whether a low-privilege user has the requisite authority to invoke certain internal operations. This oversight allows an attacker who possesses only basic or standard access credentials to bypass intended security boundaries and execute commands that should be restricted to administrative or higher-level accounts.
The operational impact of this vulnerability is severe due to its potential for lateral movement and full system compromise. By exploiting the lack of authorization checks, a low-privileged user can invoke internal operations on preconfigured remote systems connected via Visual Composer’s integration capabilities. The extent of the damage depends heavily on the configuration of these remote connections. If the connection credentials are stored with elevated privileges or if the target system trusts the source without additional verification, the attacker gains the ability to execute arbitrary commands on that remote infrastructure. This effectively transforms a low-level portal access into a high-impact breach, allowing the adversary to manipulate data, exfiltrate sensitive information, or disrupt services on the backend systems.
From an offensive security perspective, this vulnerability aligns with MITRE ATT&CK techniques related to privilege escalation and lateral movement. Specifically, it resembles T1078 Valid Accounts, where attackers use legitimate credentials that have been compromised or misused due to poor access controls. Furthermore, if the remote system is exploited to execute commands, it may also involve T1059 Command and Scripting Interpreter techniques. The ability to invoke internal operations suggests a potential for Remote Code Execution (RCE) depending on how those operations are processed by the backend services. This creates a direct path from web application exploitation to infrastructure compromise, significantly expanding the attack surface beyond the initial entry point.
The impact on confidentiality, integrity, and availability is rated as high because the attacker can potentially access sensitive data stored in connected systems, alter critical business processes or records, and cause service disruptions by executing destructive commands. The trust relationship between SAP NetWeaver Visual Composer and its remote endpoints becomes a liability when authentication checks are insufficient. Organizations relying on this integration for enterprise application connectivity face significant risk if these connections are not strictly monitored and secured with the principle of least privilege.
Mitigation strategies must focus on immediate remediation through vendor-provided patches that address the authorization logic flaws in Visual Composer. Administrators should ensure that all software components, including SAP NetWeaver and its add-ons, are updated to the latest secure versions released by SAP. In addition to patching, a defense-in-depth approach is essential. This includes implementing strict network segmentation to isolate critical remote systems from general portal access points. Access control lists (ACLs) should be reviewed to ensure that only necessary services communicate with each other. Furthermore, multi-factor authentication and robust identity governance policies can help mitigate the risk of low-privilege accounts being used for unauthorized operations. Regular auditing of user permissions and monitoring for anomalous activity involving internal API calls or remote system interactions are also critical steps in detecting and preventing exploitation attempts before they lead to full compromise.