Vulnerability in IBM Financial Transaction Manager

CVE-2026-18123

IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a remote attacker to cause a denial of service due to the improper use of reflection with externally controlled input.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.003 (17.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.8% 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-2026-18123: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18123?
CVE-2026-18123 is a high-severity vulnerability in IBM Financial Transaction Manager, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 7.6/10. Published 2026-09-22.
How severe is CVE-2026-18123?
High severity. CVSS v3 base score is 7.6 out of 10.