What is CVE-2026-17137?

CVE-2026-17137 is a medium-severity vulnerability in IBM API Connect, classified under Generation of Predictable IV with CBC Mode. CVSS score: 4.0/10. Published 2026-11-07.

How severe is CVE-2026-17137?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Vulnerability in IBM API Connect

CVE-2026-17137

IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a local attacker to obtain sensitive information due to improper use of cryptography. The encryption applied to stored data is not implemented with sufficient strength, which weakens its protection.

Published 2026-11-07 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM API Connect

Weakness classification (CWE)

CWE-329 — Generation of Predictable IV with CBC Mode

References

www.ibm.com/support/pages/node/7295635 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-17137?: CVE-2026-17137 is a medium-severity vulnerability in IBM API Connect, classified under Generation of Predictable IV with CBC Mode. CVSS score: 4.0/10. Published 2026-11-07.
How severe is CVE-2026-17137?: Medium severity. CVSS v3 base score is 4.0 out of 10.