What is CVE-2021-29715?

CVE-2021-29715 is a critical-severity vulnerability in IBM API Connect. CVSS score: 9.1/10. Published 2021-08-26.

How severe is CVE-2021-29715?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in IBM API Connect

CVE-2021-29715

IBM API Connect 5.0.0.0 through 5.0.8.11 could alllow a remote user to obtain sensitive information or conduct denial of serivce attacks due to open ports. IBM X-Force ID: 201018.

Published 2021-08-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.5th percentile), scored 2026-09-29.

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 5.0.0.0, 5.0.8.11
IBM API Connect

References

www.ibm.com/support/pages/node/6483653 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/201018 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-29715?: CVE-2021-29715 is a critical-severity vulnerability in IBM API Connect. CVSS score: 9.1/10. Published 2021-08-26.
How severe is CVE-2021-29715?: Critical severity. CVSS v3 base score is 9.1 out of 10.