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… (CVE-2026-78543)
Description
A denial of service vulnerability exists in IBM App Connect Enterprise versions 13.0.1.0 through 13.0.8.1, 12.0.1.0 through 12.0.12.28, and IBM Integration Bus for z/OS versions 10.1.0.0 through 10.1.0.7. This issue is caused by an infinite loop triggered by a remote attacker, leading to service disruption without requiring user interaction or privileges.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78543 describes a vulnerability in IBM App Connect Enterprise and IBM Integration Bus for z/OS where a remote attacker can cause a denial of service condition by triggering an infinite loop. The affected versions include IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, 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. The vulnerability does not impact confidentiality or integrity but affects availability. No known exploits are reported in the wild, and no vendor patch or advisory details are provided in the input data.
Potential Impact
The vulnerability allows a remote attacker to cause an infinite loop resulting in denial of service, impacting the availability of the affected IBM integration products. There is no impact on confidentiality or integrity. The CVSS v3.1 base score is 5.3 (medium severity), reflecting the network attack vector, low complexity, no privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data. Until a patch is available, consider limiting network exposure of affected services to trusted sources to reduce risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3x6q-qhf5-8m4j
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-78543"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9c2658acd9273b49fca62d
Added to database: 09/05/2026, 14:25:28 UTC
Last enriched: 09/07/2026, 11:08:20 UTC
Last updated: 10/21/2026, 13:22:12 UTC
Views: 92
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