CVE-2026-18490: CWE-502 Deserialization of Untrusted Data in IBM Financial Transaction Manager (FTM) for RedHat OpenShift
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.
AI Analysis
Technical Summary
CVE-2026-18490 is a deserialization of untrusted data vulnerability (CWE-502) in IBM Financial Transaction Manager (FTM) for RedHat OpenShift. The flaw exists in the PayDir Business Rules Manager RMI SSL endpoint (specifically in BrmRMISSLServerSocketFactory.java at line 95, EP8). It allows an unauthenticated attacker on an adjacent network to deliver a crafted serialized Java payload that triggers arbitrary code execution. Successful exploitation exposes all PayDir credentials and permits manipulation of payment business rules, posing significant risk to financial transaction integrity.
Potential Impact
The vulnerability enables unauthenticated remote code execution by an attacker on an adjacent network, leading to full compromise of PayDir credentials and unauthorized manipulation of payment business rules. This can result in severe confidentiality, integrity, and availability impacts on financial transaction processing.
Mitigation Recommendations
No patch links or vendor advisory details are provided in the input data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the vulnerable RMI SSL endpoint to trusted hosts only and monitor for suspicious serialized payloads targeting this service.
CVE-2026-18490: CWE-502 Deserialization of Untrusted Data in IBM Financial Transaction Manager (FTM) for RedHat OpenShift
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.
CVSS v3.1
Score 8.8high
Affected software
IBM
Financial Transaction Manager (FTM) for RedHat OpenShift
pkg:maven/com.ibm/financial-transaction-manager-ftmfor-redhat-openshiftcpe:2.3:a:ibm:financial_transaction_manager_ftmfor_redhat_openshift:4.0.6.0:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18490 is a deserialization of untrusted data vulnerability (CWE-502) in IBM Financial Transaction Manager (FTM) for RedHat OpenShift. The flaw exists in the PayDir Business Rules Manager RMI SSL endpoint (specifically in BrmRMISSLServerSocketFactory.java at line 95, EP8). It allows an unauthenticated attacker on an adjacent network to deliver a crafted serialized Java payload that triggers arbitrary code execution. Successful exploitation exposes all PayDir credentials and permits manipulation of payment business rules, posing significant risk to financial transaction integrity.
Potential Impact
The vulnerability enables unauthenticated remote code execution by an attacker on an adjacent network, leading to full compromise of PayDir credentials and unauthorized manipulation of payment business rules. This can result in severe confidentiality, integrity, and availability impacts on financial transaction processing.
Mitigation Recommendations
No patch links or vendor advisory details are provided in the input data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the vulnerable RMI SSL endpoint to trusted hosts only and monitor for suspicious serialized payloads targeting this service.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-31T14:02:24.096Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab4308bf7a7c54106431433
Added to database: 09/23/2026, 20:03:23 UTC
Last enriched: 09/23/2026, 20:17:39 UTC
Last updated: 09/24/2026, 01:57:04 UTC
Views: 11
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