Vulnerability · Published Sep 23, 2026 · Assigned by ibm

CVE-2026-18490IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities

High 8.8

In plain English

A high-severity unsafe deserialization in Financial Transaction Manager (FTM) for RedHat OpenShift from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.8%top 43.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
IBM	Financial Transaction Manager (FTM) for RedHat OpenShift	4.0.6.0 – through 4.0.10.0

Weakness: CWE-502 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.ibm.com/support/pages/node/7288641 vendor-advisory, patch