CVE-2026-18490

HIGH CVSS 3.1: 8.8 EPSS 0.25%
Updated Oct 07, 2026
IBM
Parameter Value
CVSS 8.8 (HIGH)
Affected Versions 4.0.7.0 — 4.0.11.0
Fixed In 4.0.11.0
Type CWE-502 (Deserialization of Untrusted Data)
Vendor IBM
Public PoC No

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.

Attack Parameters

Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 9

Configuration From (including) Up to (excluding)
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:*:*:*:*:*:-:*:*
4.0.7.0 4.0.11.0
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:-:*:*:*:-:*:*
— —
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:interim_fix_1:*:*:*:-:*:*
— —
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:interim_fix_2:*:*:*:-:*:*
— —
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:interim_fix_3:*:*:*:-:*:*
— —
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:interim_fix_4:*:*:*:-:*:*
— —
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:interim_fix_5:*:*:*:-:*:*
— —
Ibm Financial_Transaction_Manager
cpe:2.3:a:ibm:financial_transaction_manager:4.0.6.0:interim_fix_6:*:*:*:-:*:*
— —
Redhat Openshift
cpe:2.3:a:redhat:openshift:-:*:*:*:*:*:*:*
— —