External risk intelligence

IBM App Connect Enterprise Command Execution Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-14522

IBM App Connect Enterprise is an integration broker used to connect applications and data. It is frequently deployed as a gateway or middleware service to handle external API requests, web service traffic, and messaging integration, making it commonly exposed to network traffic in enterprise environments.

OS Command Injection

Ibm App Connect Enterprise

12.0.1.0 to before 12.0.12.2813.0.1.0 to before 13.0.8.0

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, potentially allowing attackers to run unauthorized commands over the network. This issue stems from how the software handles specific character sequences, which could be exploited to compromise systems. The main concern at this stage is confirming if our environment is affected and to what extent.

  • Software can be remotely commanded by attackers.
  • Critical flaw impacts core enterprise integration tools.
  • Assess relevance and confirm potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted requests over the network to an exposed IBM App Connect Enterprise system. These requests, containing improper CRLF characters, would bypass security checks and allow the attacker to execute arbitrary commands on the affected system. This could lead to full compromise of the server.

  • No special access needed.
  • Sends malicious network requests.
  • Allows remote command execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated remote attacker to execute arbitrary commands on affected systems. This could occur when the system processes specially crafted input that is not properly neutralized, potentially leading to unauthorized access or manipulation of the system's behavior.

  • System commands and service behavior.
  • Processing malformed input with CRLF characters.
  • Unauthorized command execution.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability impacts IBM App Connect Enterprise, a product often deployed as middleware for integrating applications and services. Given its potential exposure to network traffic, ownership likely falls to a combined effort involving application owners responsible for the integrated services, platform teams managing the middleware infrastructure, and potentially network or security teams if the instances are directly internet-facing. The initial practical step is to identify all deployed instances, assess their reachability and business criticality, locate the accountable owners, and then prioritize remediation based on risk.

  • Application and platform teams should own remediation.
  • Verify instance reachability and business criticality first.
  • Plan vendor coordination and risk reduction.

Supplementary metadata

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.

Frequently asked questions

What is IBM App Connect Enterprise?

It is an integration broker used to connect diverse applications, services, and data sources within an organization. It acts as middleware to handle messaging, web service traffic, and API requests, serving as a critical hub that enables different software systems to communicate and exchange information effectively.

What does this CVE-2026-14522 vulnerability mean?

This vulnerability is classified as CWE-78, which relates to improper neutralization of special elements used in an OS command. In this case, the software fails to properly handle CRLF (carriage return and line feed) characters in incoming requests. Because of this weakness, an attacker can manipulate the input to trick the system into executing unauthorized, arbitrary operating system commands.

How can an attacker trigger this command execution?

An attacker triggers this by sending specially crafted network requests containing improper CRLF sequences to an affected system. The system processes this malicious input without proper neutralization, leading to command execution. Simply visiting the application or sending standard, well-formed API traffic does not trigger this flaw; the requests must specifically contain the malicious CRLF injection patterns.

Is my IBM App Connect Enterprise instance at risk?

According to Halo Surface Signal, this software is frequently deployed as a gateway or middleware service to handle external API requests and messaging traffic. This architecture often results in instances being exposed to network traffic. If your instance is positioned to accept external requests or sits at the edge of your network to facilitate integration, it is considered more reachable and thus higher risk.

What should I do to respond to CVE-2026-14522?

Your first step is to perform an inventory of all deployed IBM App Connect Enterprise instances to identify which versions are in use. Once you have identified these assets, assess their specific network reachability and business criticality. Coordinate with your application and platform teams to confirm whether your configuration falls within the affected version ranges and prioritize your path to remediation.

References