Deserialization in IBM Financial Transaction Manager (Ftm) For Red Hat Openshift
CVE-2026-18490
IBM Financial Transaction Manager (FTM) for RedHat OpenShift is vulnerable to unauthenticated remote code execution via Java native deserialization on the PayDir Business Rules Manager RMI SSL endpoint (BrmRMISSLServerSocketFactory.java:95, EP8). An adjacent-network attacker can deliver a crafted serialized payload to achieve arbitrary code execution, exposing all PayDir credentials and enabling manipulation of payment business rules.
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
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
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7288641 (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-18490?
- CVE-2026-18490 is a high-severity vulnerability in IBM Financial Transaction Manager (Ftm) For Red Hat Openshift, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2026-09-23.
- How severe is CVE-2026-18490?
- High severity. CVSS v3 base score is 8.8 out of 10.