What is CVE-2026-17401?

CVE-2026-17401 is a high-severity vulnerability in IBM API Connect, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2026-11-07.

How severe is CVE-2026-17401?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in IBM API Connect

CVE-2026-17401

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to execute arbitrary code due to a stack-based buffer overflow.

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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-121 — Stack-based Buffer Overflow

References

www.ibm.com/support/pages/node/7295635 (vendor-advisory, patch)
www.ibm.com/support/pages/node/7295637 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-17401?: CVE-2026-17401 is a high-severity vulnerability in IBM API Connect, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2026-11-07.
How severe is CVE-2026-17401?: High severity. CVSS v3 base score is 7.2 out of 10.