CVE-2026-18490 IBM Financial Transaction Manager - Remote Code Execution

IBM Financial Transaction Manager (FTM) for RedHat OpenShift contains an insecure deserialization vulnerability in PayDir Business Rules Manager RMI SSL endpoint, letting adjacent-network attackers execute arbitrary code remotely, exploit requires network adjacency.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.25% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Information Disclosure, Data Tampering
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-502

Vendor fix

Update to the latest available version with deserialization fixes.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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