CVE-2026-18490CWE-502insecure-deserialization

CVE-2026-18490

High · published September 23, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
15.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00253 · 15.9th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-09-23T20:16Z
Affected products (8)
ProductVersionsFixed in
ibm/financial_transaction_manager≥ 4.0.7.0, < 4.0.11.04.0.11.0
ibm/financial_transaction_managerall versions—
ibm/financial_transaction_managerall versions—
ibm/financial_transaction_managerall versions—
ibm/financial_transaction_managerall versions—
ibm/financial_transaction_managerall versions—
ibm/financial_transaction_managerall versions—
ibm/financial_transaction_managerall versions—
References (1)
https://www.ibm.com/support/pages/node/7288641 · [email protected]
EPSS history
Timeline
  • 25 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 23 SEP 15:45Z
    IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
    cvelistv5