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.

Score

CVSS 3.1 8.8 High

Status

Analyzed - psirt@us.ibm.com

Published

2026-09-23

Last modified

2026-10-07

Weaknesses

CWE-502

Affected products

• Financial Transaction Manager (Ibm)
• Financial Transaction Manager Ftmfor Redhat Openshift (Ibm)

References

• https://www.ibm.com/support/pages/node/7288641