Auth bypass in IBM Financial Transaction Manager

CVE-2026-18177

IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a remote attacker to execute unauthorized payment actions due to missing authorization checks.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L.

EPSS exploit prediction

EPSS: 0.003 (21.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-18177: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18177?
CVE-2026-18177 is a high-severity vulnerability in IBM Financial Transaction Manager, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-09-23.
How severe is CVE-2026-18177?
High severity. CVSS v3 base score is 7.1 out of 10.