{"id":"CVE-2026-78543","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 remote attacker to cause a denial of service due to an infinite loop.","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 remote attacker to cause a denial of service due to an infinite loop.","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-835"],"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":"2026-09-09T14:50:54.433","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-78543","references":[{"url":"https://www.ibm.com/support/pages/node/7286372","label":"psirt@us.ibm.com"}],"tags":["nvd"],"epss":0.00386,"epssPercentile":0.32586,"ingestedAt":"2026-09-08T15:33:26.962Z","slug":"CVE-2026-78543","body":"## Overview\n\nIBM 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 remote attacker to cause a denial of service due to an infinite loop.\n\n## Affected\n\n- `app_connect_enterprise >= 12.0.1.0, < 12.0.12.29`\n- `app_connect_enterprise >= 13.0.1.0, < 13.0.8.2`\n- `integration_bus_for_z/os >= 10.1.0.0, <= 10.1.0.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `app_connect_enterprise 13.0.8.2`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}