What is CVE-2021-29737?

CVE-2021-29737 is a high-severity vulnerability in IBM Aix, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2021-11-02.

How severe is CVE-2021-29737?

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

Vulnerability in IBM Aix

CVE-2021-29737

IBM InfoSphere Data Flow Designer Engine (IBM InfoSphere Information Server 11.7 ) component has improper validation of the REST API server certificate. IBM X-Force ID: 201301.

Vulnerability class: Improper Certificate Validation

Published 2021-11-02 · 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:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

IBM Aix
IBM Infosphere Information Server — versions 11.7
IBM Infosphere Information Server — versions 11.7
Linux Kernel
Microsoft Windows

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

www.ibm.com/support/pages/node/6509086 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/201301 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-29737?: CVE-2021-29737 is a high-severity vulnerability in IBM Aix, classified under Improper Certificate Validation. CVSS score: 7.5/10. Published 2021-11-02.
How severe is CVE-2021-29737?: High severity. CVSS v3 base score is 7.5 out of 10.