CVE-2026-78543: IBM App Connect Enterprise

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• IBM App Connect Enterprise: from 12.0.1.0, before 12.0.12.29 (fixed in 12.0.12.29); from 13.0.1.0, before 13.0.8.2 (fixed in 13.0.8.2)
• IBM Integration Bus For Z/os: from 10.1.0.0, up to and including 10.1.0.7

Published 2026-09-04. Last modified 2026-09-09.