What is CVE-2019-4402?

CVE-2019-4402 is a high-severity vulnerability in IBM API Connect. CVSS score: 7.5/10. Published 2019-08-20.

How severe is CVE-2019-4402?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in IBM API Connect

CVE-2019-4402

IBM API Connect 2018.1 through 2018.4.1.6 developer portal could allow an unauthorized user to cause a denial of service via an unprotected API. IBM X-Force ID: 162263.

Published 2019-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

IBM API Connect — versions 2018.1, 2018.4.1.6
IBM API Connect

References

www.ibm.com/support/docview.wss (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/162263 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2019-4402?: CVE-2019-4402 is a high-severity vulnerability in IBM API Connect. CVSS score: 7.5/10. Published 2019-08-20.
How severe is CVE-2019-4402?: High severity. CVSS v3 base score is 7.5 out of 10.