# CVE-2026-11378

IBM MQ integer overflow allows DoS or potential RCE in distribution list processing

- Page: https://www.vulneraibility.com/cve/CVE-2026-11378
- CVSS: 8.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.60% (percentile 48.9)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-09-19)
- Weakness: CWE-190
- Published: 2026-09-18

## Affected versions

- IBM MQ: affected >= 9.1.0.0 and <= 9.1.0.37 LTS; >= 9.2.0.0 and <= 9.2.0.43 LTS; >= 9.3.0.0 and <= 9.3.0.41 LTS; >= 9.3.0.0 and <= 9.3.5.1 CD; >= 9.4.0.0 and <= 9.4.0.25 LTS; >= 9.4.0.0 and <= 9.4.5.1 CD; 10.0.0.0

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated attacker can trigger an integer overflow in distribution list processing to cause denial of service or potentially execute arbitrary code.

## Action

Immediate action required

## Recommendation

Follow IBM advisory, apply mitigations/updates when available, and restrict MQ access.

## References

- [patch] https://www.ibm.com/support/pages/node/7284945

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.