Deserialization in IBM Financial Transaction Manager

CVE-2026-17637

IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow an adjacent-network attacker to execute arbitrary code due to deserialization of untrusted data.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% 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-2026-17637: held from 0.002 to 0.007.

EPSS over last 30 days · oldest: 0.002 · newest: 0.007 · change: +0.005

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-17637?
CVE-2026-17637 is a high-severity vulnerability in IBM Financial Transaction Manager, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-09-22.
How severe is CVE-2026-17637?
High severity. CVSS v3 base score is 8.8 out of 10.