External risk intelligence

IBM App Connect Enterprise Information Disclosure Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-92559

IBM App Connect Enterprise is an integration platform frequently deployed as a gateway or middleware service to handle API traffic and data exchange. Binding services to unrestricted IP addresses in such products commonly results in these interfaces being reachable across the network, including potential exposure to public-internet-facing environments in standard enterprise deployment configurations.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in IBM App Connect Enterprise that could allow unauthorized access to sensitive information. This issue stems from the software binding to an unrestricted IP address, potentially exposing the system to remote attackers. The main concern is confirming if our environment utilizes the affected technology and, if so, to what extent.

Unrestricted IP address allows sensitive data access.
Critical vulnerability impacts integration platform.
Confirm relevance and exposure within our systems.

Attack Path

How an attacker could exploit the issue

An attacker could potentially exploit this vulnerability by reaching an exposed instance of IBM App Connect Enterprise over the network. If the product is configured to bind to an unrestricted IP address, it may allow an unauthenticated attacker to interact with the service. This interaction could lead to the disclosure of sensitive information.

Network access to the product is required.
Interaction with a bound but unrestricted IP address.
Disclosure of sensitive information.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to access sensitive information or disrupt services by exploiting an exposed network interface. When the product binds to an unrestricted IP address, it may become accessible over the network, potentially exposing internal data or allowing unauthorized actions when supported by the advisory's deployment context.

System data and service behavior at risk.
Exposure via unrestricted network binding.
Sensitive information disclosure and service disruption.

Operational Fix

Recommended remediation, mitigation, and detection steps

IBM App Connect Enterprise, often deployed as middleware or gateway services, may be vulnerable if configured to bind to unrestricted IP addresses, potentially exposing sensitive information. Technical leaders should initiate an exposure review by identifying all instances of the affected technology, confirming their network reachability and business criticality, and then assigning ownership for remediation planning based on the identified risk.

Ownership: App Connect or Integration Platform team.
Verify: Network reachability and business criticality.
Action: Plan remediation based on risk.

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.

Free EASM Trial See How Signal Works

Frequently asked questions

What is IBM App Connect Enterprise?

IBM App Connect Enterprise is an integration platform used by organizations as middleware or a gateway to connect disparate applications, manage data exchange, and handle API traffic. It acts as a central hub for business processes, often sitting between services to translate and route information across an enterprise network.

What does CWE-1327 mean for CVE-2026-92559?

CWE-1327 refers to 'Binding to an Unrestricted IP Address.' In the context of this vulnerability, it means the software is configured to listen for network traffic on all available interfaces rather than limiting connections to specific, trusted ones. This oversight allows remote users to interact with service interfaces that were intended to remain private.

How does an attacker trigger this vulnerability?

An attacker triggers this by sending network traffic directly to an affected IBM App Connect Enterprise instance that is bound to an unrestricted address. Importantly, this does not require complex exploitation techniques; simply having network-level reach to the exposed service interface is the primary condition needed to interact with the system.

Is my instance of this software at risk?

According to Halo Surface Signal, this software is frequently deployed as a gateway to handle external traffic, making it a common candidate for network accessibility. If your instance is reachable over the network or deployed in an environment where it accepts connections from beyond restricted zones, it faces a higher probability of being impacted.

Do I need to take action if I run this product?

Yes. First, perform an inventory to locate all active instances within your environment. Verify the network configuration for each to determine if they are bound to unrestricted interfaces. Once identified, prioritize these instances based on their business criticality and coordinate with your integration team to plan and apply the necessary security updates.

References

www.ibm.com/support/pages/node/7291781

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.