What is CVE-2024-40680?

CVE-2024-40680 is a medium-severity vulnerability in IBM Mq, classified under CWE-789. CVSS score: 5.5/10. Published 2024-09-07.

How severe is CVE-2024-40680?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2024-40680 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Resource exhaustion in IBM Mq

CVE-2024-40680

IBM MQ 9.3 CD and 9.4 LTS/CD could allow a local user to cause a denial of service due to improper memory allocation causing a segmentation fault.

Published 2024-09-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (7.8th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

IBM Mq — versions 9.3 CD, 9.4 LTS, 9.4 CD
IBM Mq Operator — versions 2.0.26, 3.2.4

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

www.ibm.com/support/pages/node/7167732 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2024-40680?: CVE-2024-40680 is a medium-severity vulnerability in IBM Mq, classified under CWE-789. CVSS score: 5.5/10. Published 2024-09-07.
How severe is CVE-2024-40680?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2024-40680 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.