CVE-2026-78543

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

Security Bulletin: IBM App Connect Enterprise and IBM Integration Bus for z/OS Adapter nodes are vulnerable to multiple CVEs

https://www.ibm.com/support/pages/node/7286372

Vendor Advisories for CVE-2026-78543(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 26× in last 7d / 54× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 22:20 UTCEG score recompute
  2. 2026-09-19 22:19 UTCGHSA enrichment
  3. 2026-09-19 09:55 UTCGHSA enrichment
  4. 2026-09-18 21:29 UTCEG score recompute
  5. 2026-09-18 21:29 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 09:08 UTCGHSA enrichment
  8. 2026-09-17 20:47 UTCEG score recompute
  9. 2026-09-17 20:47 UTCGHSA enrichment
  10. 2026-09-17 08:25 UTCGHSA enrichment
  11. 2026-09-16 20:00 UTCEG score recompute
  12. 2026-09-16 20:00 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 07:28 UTCEG score recompute
  15. 2026-09-16 07:28 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 19:06 UTCGHSA enrichment
  18. 2026-09-15 06:44 UTCEG score recompute
  19. 2026-09-15 06:44 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 18:22 UTCGHSA enrichment
  23. 2026-09-14 05:31 UTCGHSA enrichment
  24. 2026-09-13 17:10 UTCEG score recompute
  25. 2026-09-13 17:10 UTCGHSA enrichment
Show 29 more
  1. 2026-09-13 04:49 UTCGHSA enrichment
  2. 2026-09-12 16:27 UTCEG score recompute
  3. 2026-09-12 16:27 UTCGHSA enrichment
  4. 2026-09-12 04:05 UTCGHSA enrichment
  5. 2026-09-11 15:43 UTCEG score recompute
  6. 2026-09-11 15:43 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 14:53 UTCEPSS rescore
  9. 2026-09-11 03:17 UTCGHSA enrichment
  10. 2026-09-10 14:55 UTCEG score recompute▲ 2.20
  11. 2026-09-10 14:55 UTCGHSA enrichment
  12. 2026-09-09 15:06 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  13. 2026-09-09 15:05 UTCEG score recompute
  14. 2026-09-09 15:05 UTCGHSA enrichment
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-08 15:15 UTCGHSA enrichment
  17. 2026-09-07 18:10 UTCEG score recompute
  18. 2026-09-07 18:10 UTCGHSA enrichment
  19. 2026-09-06 18:20 UTCEG score recompute
  20. 2026-09-06 18:20 UTCGHSA enrichment
  21. 2026-09-06 13:48 UTCEPSS rescore
  22. 2026-09-05 18:29 UTCEG score recompute
  23. 2026-09-05 18:29 UTCGHSA enrichment
  24. 2026-09-04 18:40 UTCEG score recompute
  25. 2026-09-04 18:40 UTCGHSA enrichment
  26. 2026-09-04 17:52 UTCEG score recompute
  27. 2026-09-04 16:28 UTCEG score recompute
  28. 2026-09-04 15:29 UTCEG score recompute
  29. 2026-09-04 15:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78543?
CVE-2026-78543 is a high vulnerability published on September 4, 2026. 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.
When was CVE-2026-78543 disclosed?
CVE-2026-78543 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78543 actively exploited?
CVE-2026-78543 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 67.4% of all scored CVEs.
What is the CVSS score of CVE-2026-78543?
CVE-2026-78543 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-78543?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78543, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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