Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-78543
IBM App Connect Enterprise and IBM Integration Bus for z/OS Adapter nodes are vulnerable to multiple CVEs
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N N H 7.5 .0055 44.0 —
AFFECTED
Product Versions Fixed
App Connect Enterprise 13.0.1.0 – —
Integration Bus for z/OS 10.1.0.0 – —
TIMELINE
Aug 24 Reserved by ibm
Sep 4 Published (CNA: ibm)
Sep 9 RESCORED — CVE-2026-78543 (IBM App Connect Enterprise). CVSS 5.3 → 7.5 (NVD).
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 24, 2026 | Reserved | Reserved by ibm |
| September 4, 2026 | Published | Published (CNA: ibm) |
| September 9, 2026 | RESCORED | RESCORED — CVE-2026-78543 (IBM App Connect Enterprise). CVSS 5.3 → 7.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| IBM | App Connect Enterprise | — | 13.0.1.0 | — |
| IBM | Integration Bus for z/OS | — | 10.1.0.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-78543 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
