---
id: CVE-2026-17440
title: >-
  IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, and 12.0.1.0 through
  12.0.12.28 and IBM Integration Bus for z/OS 10.1.0.0 through 10.1.0.7 could
  allow a local attacker to cause a denial of service due to uncontrolled
  recursion.
summary: >-
  IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, and 12.0.1.0 through
  12.0.12.28 and IBM Integration Bus for z/OS 10.1.0.0 through 10.1.0.7 could
  allow a local attacker to cause a denial of service due to uncontrolled
  recursion.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-674
vendor: ibm
product: app_connect_enterprise
affected:
  - 'app_connect_enterprise >= 12.0.1.0, < 12.0.12.29'
  - 'app_connect_enterprise >= 13.0.1.0, < 13.0.8.2'
  - 'integration_bus_for_z/os >= 10.1.0.0, <= 10.1.0.7'
patched:
  - app_connect_enterprise 13.0.8.2
published: '2026-09-04'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T14:12:06.967'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17440'
references:
  - url: 'https://www.ibm.com/support/pages/node/7286372'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.001
epssPercentile: 0.00785
ingestedAt: '2026-09-08T15:33:26.963Z'
---

## Overview

IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, and 12.0.1.0 through 12.0.12.28 and IBM Integration Bus for z/OS 10.1.0.0 through 10.1.0.7 could allow a local attacker to cause a denial of service due to uncontrolled recursion.

## Affected

- `app_connect_enterprise >= 12.0.1.0, < 12.0.12.29`
- `app_connect_enterprise >= 13.0.1.0, < 13.0.8.2`
- `integration_bus_for_z/os >= 10.1.0.0, <= 10.1.0.7`

## Remediation

Upgrade past the affected range:

- `app_connect_enterprise 13.0.8.2`