External risk intelligence

SAP NetWeaver Visual Composer Authorization Bypass Leads to Remote System Compromise.

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-89110

SAP NetWeaver Visual Composer is an internal portal component used for building applications. While it is accessible via the network, it is typically deployed behind organizational firewalls or within internal network segments. Direct public internet exposure is not a standard default deployment pattern, but it remains a reachable component within many enterprise network architectures.

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability in SAP NetWeaver Visual Composer could allow an attacker with limited access to exploit internal operations on connected systems. This could potentially lead to a complete compromise of those systems, impacting confidentiality, integrity, and availability.

Unauthorized access to internal system functions.
Impacts critical business systems if exploited.
Assess relevance and verify exposure.

Attack Path

How an attacker could exploit the issue

An attacker with low-level access could exploit a flaw in SAP NetWeaver Visual Composer's portal functionality. This flaw allows them to trigger internal operations on a separate, pre-configured remote system. If the remote connection is set up in a certain way, this could result in complete control over that remote system.

Requires low-privilege access.
Invokes internal operations on remote systems.
Risks full remote system compromise.

Live Threat

Current exploitation, exposure, and threat context

SAP NetWeaver Visual Composer's insufficient authorization checks could allow a low-privilege attacker to execute internal operations on a remote system. When supported by the remote connection configuration, this could lead to a complete compromise of the remote system, impacting confidentiality, integrity, and availability.

Remote system operations and data.
Invoking internal operations via network.
Full compromise of the remote system.

Operational Fix

Recommended remediation, mitigation, and detection steps

SAP NetWeaver Visual Composer is likely managed by platform or application teams responsible for SAP environments. The initial practical step is to identify all instances of this technology, determine their network reachability and business criticality, and locate the accountable owner for each. Subsequent remediation planning should be risk-based, considering factors like vendor coordination and planned maintenance windows.

Platform or application owners should manage this issue.
Verify affected SAP instances and their exposure.
Plan remediation based on risk and business criticality.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is SAP NetWeaver Visual Composer?

SAP NetWeaver Visual Composer is a component of the SAP NetWeaver platform. It provides a browser-based, model-driven development environment that developers and business users utilize to create and deploy sophisticated business applications and dashboards without needing deep programming skills. It typically interfaces with backend SAP systems to visualize data and streamline complex workflows.

What does CVE-2026-89110 mean for security?

This vulnerability is classified as CWE-749, or Exposed Dangerous Method. It means the software fails to properly check if a user has permission to perform certain actions. Because of this missing authorization, a low-privilege user can trigger sensitive internal operations that were meant to be restricted, potentially leading to unauthorized control over remote systems linked to the portal.

How does an attacker trigger this vulnerability?

An attacker needs low-level access to the portal to initiate the malicious request. The vulnerability is triggered when the software incorrectly allows these authenticated users to invoke operations on a pre-configured remote system. It does not trigger if the remote system is not connected or if the portal is configured without these specific cross-system remote operations enabled.

Is my instance at risk according to Halo Surface Signal?

Halo Surface Signal notes that while this component is accessible via the network, it is typically kept behind organizational firewalls. It is not designed for public internet exposure, but because it is a reachable component within many enterprise network architectures, you should verify its specific placement to see if it is accessible to unauthorized internal or external segments.

Do I need to act immediately on this CVE?

You should begin by identifying all instances of SAP NetWeaver Visual Composer in your environment. Determine who owns these systems and check their current network reachability. Once you have an inventory, coordinate with your SAP platform teams to evaluate the business criticality of these systems and prepare for vendor-supplied patches or security updates.

References

me.sap.com/notes/3797111

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.